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Meta LeetCode Interview Questions

Practice 1399 coding problems currently tagged to Meta. Use the frequency and topic signals to build a focused software engineering interview practice plan.

Last updated: September 28, 2026

427 Easy
763 Medium
209 Hard

Top Topics at Meta

ArrayStringHash TableMathDynamic Programming

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Meta LeetCode Interview Questions

ProblemDifficultyDiffFrequencyTopicsAction
Minimum Remove to Make Valid Parentheses
100%
MediumM
100%
StringStack
Solve→
Valid Word Abbreviation
96.8%
EasyE
96.8%
Two PointersString
Solve→
Valid Palindrome II
95.1%
EasyE
95.1%
Two PointersString+1
Solve→
Binary Tree Vertical Order Traversal
93.4%
MediumM
93.4%
Hash TableTree+4
Solve→
Kth Largest Element in an Array
93.3%
MediumM
93.3%
ArrayDivide and Conquer+3
Solve→
Two Sum
90.2%
EasyE
90.2%
ArrayHash Table
Solve→
Basic Calculator II
89.3%
MediumM
89.3%
MathString+1
Solve→
Lowest Common Ancestor of a Binary Tree III
88.5%
MediumM
88.5%
Hash TableTwo Pointers+4
Solve→
Nested List Weight Sum
87.9%
MediumM
87.9%
Depth-First SearchBreadth-First Search
Solve→
Random Pick with Weight
87.7%
MediumM
87.7%
ArrayMath+3
Solve→
Subarray Sum Equals K
87.2%
MediumM
87.2%
ArrayHash Table+1
Solve→
Diameter of Binary Tree
86.8%
EasyE
86.8%
TreeDepth-First Search+2
Solve→
Lowest Common Ancestor of a Binary Tree
86.4%
MediumM
86.4%
TreeDepth-First Search+3
Solve→
Merge Sorted Array
86.3%
EasyE
86.3%
ArrayTwo Pointers+1
Solve→
Find Peak Element
85.8%
MediumM
85.8%
ArrayBinary Search
Solve→
Binary Tree Right Side View
85.4%
MediumM
85.4%
TreeDepth-First Search+2
Solve→
Merge Intervals
84.6%
MediumM
84.6%
ArraySorting+1
Solve→
Pow(x, n)
84.1%
MediumM
84.1%
MathRecursion
Solve→
Simplify Path
83.7%
MediumM
83.7%
StringStack
Solve→
Valid Palindrome
82.6%
EasyE
82.6%
Two PointersString
Solve→
Buildings With an Ocean View
82.6%
MediumM
82.6%
ArrayStack+1
Solve→
Best Time to Buy and Sell Stock
82.2%
EasyE
82.2%
ArrayDynamic Programming
Solve→
Top K Frequent Elements
81.3%
MediumM
81.3%
ArrayHash Table+6
Solve→
Shortest Path in Binary Matrix
80.9%
MediumM
80.9%
ArrayBreadth-First Search+1
Solve→
Dot Product of Two Sparse Vectors
79.6%
MediumM
79.6%
ArrayHash Table+3
Solve→

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Next Permutation
79%
MediumM
79%
ArrayTwo Pointers
Solve→
LRU Cache
78.5%
MediumM
78.5%
Hash TableLinked List+2
Solve→
Sum Root to Leaf Numbers
78.4%
MediumM
78.4%
TreeDepth-First Search+1
Solve→
Copy List with Random Pointer
78.1%
MediumM
78.1%
Hash TableLinked List
Solve→
Range Sum of BST
78%
EasyE
78%
TreeDepth-First Search+2
Solve→
K Closest Points to Origin
77.1%
MediumM
77.1%
ArrayMath+6
Solve→
Merge k Sorted Lists
75.1%
HardH
75.1%
Linked ListDivide and Conquer+3
Solve→
Max Consecutive Ones III
74.6%
MediumM
74.6%
ArrayBinary Search+2
Solve→
Valid Parentheses
73.9%
EasyE
73.9%
StringStack+1
Solve→
Add Two Numbers
73.6%
MediumM
73.6%
Linked ListMath+1
Solve→
Interval List Intersections
73.6%
MediumM
73.6%
ArrayTwo Pointers+1
Solve→
Find First and Last Position of Element in Sorted Array
73.1%
MediumM
73.1%
ArrayBinary Search
Solve→
Moving Average from Data Stream
73.1%
EasyE
73.1%
ArrayDesign+2
Solve→
Custom Sort String
72.8%
MediumM
72.8%
Hash TableString+1
Solve→
Making A Large Island
72.8%
HardH
72.8%
ArrayDepth-First Search+3
Solve→
Minimum Window Substring
71.9%
HardH
71.9%
Hash TableString+1
Solve→
Minimum Add to Make Parentheses Valid
71.8%
MediumM
71.8%
StringStack+2
Solve→
Maximum Swap
71.7%
MediumM
71.7%
MathGreedy
Solve→
3Sum
71.1%
MediumM
71.1%
ArrayTwo Pointers+1
Solve→
Clone Graph
70.5%
MediumM
70.5%
Hash TableDepth-First Search+2
Solve→
Longest Common Prefix
69.7%
EasyE
69.7%
ArrayString+1
Solve→
Vertical Order Traversal of a Binary Tree
69.1%
HardH
69.1%
Hash TableTree+4
Solve→
Longest Substring Without Repeating Characters
68.9%
MediumM
68.9%
Hash TableString+1
Solve→
Kth Missing Positive Number
68.6%
EasyE
68.6%
ArrayBinary Search
Solve→
Valid Number
68.2%
HardH
68.2%
String
Solve→

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Exclusive Time of Functions
67.4%
MediumM
67.4%
ArrayStack
Solve→
Longest Palindromic Substring
67.1%
MediumM
67.1%
Two PointersString+2
Solve→
Remove Duplicates from Sorted Array
67.1%
EasyE
67.1%
ArrayTwo Pointers
Solve→
Diagonal Traverse
67%
MediumM
67%
ArrayMatrix+1
Solve→
Median of Two Sorted Arrays
66.8%
HardH
66.8%
ArrayBinary Search+1
Solve→
Course Schedule
65.7%
MediumM
65.7%
Depth-First SearchBreadth-First Search+3
Solve→
All Nodes Distance K in Binary Tree
65.7%
MediumM
65.7%
Hash TableTree+3
Solve→
Number of Islands
65.5%
MediumM
65.5%
ArrayDepth-First Search+3
Solve→
Move Zeroes
65.3%
EasyE
65.3%
ArrayTwo Pointers
Solve→
Remove Nth Node From End of List
64.7%
MediumM
64.7%
Linked ListTwo Pointers
Solve→
Palindrome Number
64.1%
EasyE
64.1%
Math
Solve→
Convert Binary Search Tree to Sorted Doubly Linked List
63.7%
MediumM
63.7%
Linked ListStack+5
Solve→
Add Strings
63.6%
EasyE
63.6%
MathString+1
Solve→
Insert into a Sorted Circular Linked List
63.4%
MediumM
63.4%
Linked List
Solve→
Palindromic Substrings
63%
MediumM
63%
Two PointersString+1
Solve→
Trapping Rain Water
62.6%
HardH
62.6%
ArrayTwo Pointers+3
Solve→
Robot Room Cleaner
62.4%
HardH
62.4%
BacktrackingInteractive
Solve→
Container With Most Water
62.2%
MediumM
62.2%
ArrayTwo Pointers+1
Solve→
Subsets
61.8%
MediumM
61.8%
ArrayBacktracking+1
Solve→
Closest Binary Search Tree Value
61.8%
EasyE
61.8%
Binary SearchTree+3
Solve→
Group Shifted Strings
61.4%
MediumM
61.4%
ArrayHash Table+1
Solve→
Accounts Merge
61.4%
MediumM
61.4%
ArrayHash Table+5
Solve→
Roman to Integer
61.1%
EasyE
61.1%
Hash TableMath+1
Solve→
Goat Latin
61.1%
EasyE
61.1%
String
Solve→
Binary Search Tree Iterator
60.9%
MediumM
60.9%
StackTree+4
Solve→

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Maximum Subarray
60.5%
MediumM
60.5%
ArrayDivide and Conquer+1
Solve→
Continuous Subarray Sum
59.8%
MediumM
59.8%
ArrayHash Table+3
Solve→
Random Pick Index
59.1%
MediumM
59.1%
Hash TableMath+2
Solve→
Expression Add Operators
58.8%
HardH
58.8%
MathString+1
Solve→
Generate Parentheses
58.6%
MediumM
58.6%
StringDynamic Programming+2
Solve→
Group Anagrams
58.6%
MediumM
58.6%
ArrayHash Table+2
Solve→
Koko Eating Bananas
58.6%
MediumM
58.6%
ArrayBinary Search
Solve→
Contains Duplicate II
58.4%
EasyE
58.4%
ArrayHash Table+1
Solve→
Merge Two Sorted Lists
58.1%
EasyE
58.1%
Linked ListRecursion
Solve→
Search in Rotated Sorted Array
58.1%
MediumM
58.1%
ArrayBinary Search
Solve→
Letter Combinations of a Phone Number
57.8%
MediumM
57.8%
Hash TableString+1
Solve→
Majority Element
57.8%
EasyE
57.8%
ArrayHash Table+4
Solve→
Valid Palindrome III
57.8%
HardH
57.8%
StringDynamic Programming
Solve→
Merge Strings Alternately
57.8%
EasyE
57.8%
Two PointersString
Solve→
Word Ladder
57.6%
HardH
57.6%
Hash TableString+2
Solve→
Sliding Window Median
57.6%
HardH
57.6%
ArrayHash Table+3
Solve→
String to Integer (atoi)
57.3%
MediumM
57.3%
String
Solve→
Climbing Stairs
56.8%
EasyE
56.8%
MathDynamic Programming+1
Solve→
Sort Colors
56.8%
MediumM
56.8%
ArrayTwo Pointers+3
Solve→
Longest Consecutive Sequence
56.8%
MediumM
56.8%
ArrayHash Table+1
Solve→
Recyclable and Low Fat Products
56.8%
EasyE
56.8%
Database
Solve→
Set Matrix Zeroes
55.9%
MediumM
55.9%
ArrayHash Table+1
Solve→
Kth Smallest Element in a Sorted Matrix
55.9%
MediumM
55.9%
ArrayBinary Search+3
Solve→
Remove All Adjacent Duplicates In String
55.6%
EasyE
55.6%
StringStack
Solve→
Reverse Integer
55.3%
MediumM
55.3%
Math
Solve→

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Missing Ranges
54.7%
EasyE
54.7%
Array
Solve→
Create Hello World Function
54.7%
EasyE
54.7%
Solve→
Check Completeness of a Binary Tree
54.4%
MediumM
54.4%
TreeBreadth-First Search+1
Solve→
Word Break
54.1%
MediumM
54.1%
ArrayHash Table+5
Solve→
Toeplitz Matrix
54.1%
EasyE
54.1%
ArrayMatrix
Solve→
Squares of a Sorted Array
54.1%
EasyE
54.1%
ArrayTwo Pointers+1
Solve→
Product of Array Except Self
53.4%
MediumM
53.4%
ArrayPrefix Sum
Solve→
Sliding Window Maximum
53.4%
HardH
53.4%
ArrayQueue+4
Solve→
Meeting Rooms II
53.4%
MediumM
53.4%
ArrayTwo Pointers+4
Solve→
Alien Dictionary
53.4%
HardH
53.4%
ArrayString+5
Solve→
Rotate Image
53.1%
MediumM
53.1%
ArrayMath+1
Solve→
Plus One
53.1%
EasyE
53.1%
ArrayMath
Solve→
Valid Anagram
53.1%
EasyE
53.1%
Hash TableString+1
Solve→
Count Nodes Equal to Average of Subtree
52.7%
MediumM
52.7%
TreeDepth-First Search+1
Solve→
Decode String
52%
MediumM
52%
StringStack+1
Solve→
Longest Valid Parentheses
51.7%
HardH
51.7%
StringDynamic Programming+2
Solve→
Spiral Matrix
51.7%
MediumM
51.7%
ArrayMatrix+1
Solve→
Binary Tree Maximum Path Sum
51.7%
HardH
51.7%
Dynamic ProgrammingTree+3
Solve→
Palindrome Linked List
51.7%
EasyE
51.7%
Linked ListTwo Pointers+2
Solve→
Reverse Linked List
50.5%
EasyE
50.5%
Linked ListRecursion
Solve→
Strobogrammatic Number
50.5%
EasyE
50.5%
Hash TableTwo Pointers+1
Solve→
Friends Of Appropriate Ages
50.5%
MediumM
50.5%
ArrayTwo Pointers+2
Solve→
3Sum Closest
50.1%
MediumM
50.1%
ArrayTwo Pointers+1
Solve→
Jump Game
50.1%
MediumM
50.1%
ArrayDynamic Programming+1
Solve→
Add Binary
50.1%
EasyE
50.1%
MathString+2
Solve→

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Pascal's Triangle
50.1%
EasyE
50.1%
ArrayDynamic Programming
Solve→
Lowest Common Ancestor of a Binary Search Tree
50.1%
MediumM
50.1%
TreeDepth-First Search+4
Solve→
Remove Invalid Parentheses
50.1%
HardH
50.1%
StringBacktracking+1
Solve→
Unique Paths
49.7%
MediumM
49.7%
MathDynamic Programming+1
Solve→
Find Median from Data Stream
49.7%
HardH
49.7%
Two PointersDesign+3
Solve→
Insert Delete GetRandom O(1)
49.7%
MediumM
49.7%
ArrayHash Table+3
Solve→
4Sum
49.3%
MediumM
49.3%
ArrayTwo Pointers+1
Solve→
Multiply Strings
49.3%
MediumM
49.3%
MathString+1
Solve→
Coin Change
49.3%
MediumM
49.3%
ArrayDynamic Programming+3
Solve→
Design Tic-Tac-Toe
49.3%
MediumM
49.3%
ArrayHash Table+3
Solve→
Boundary of Binary Tree
49.3%
MediumM
49.3%
TreeDepth-First Search+1
Solve→
Can Place Flowers
49.3%
EasyE
49.3%
ArrayGreedy
Solve→
Regular Expression Matching
48.8%
HardH
48.8%
StringDynamic Programming+1
Solve→
Populating Next Right Pointers in Each Node
48.8%
MediumM
48.8%
Linked ListTree+3
Solve→
Basic Calculator
48.4%
HardH
48.4%
MathString+2
Solve→
Find the Index of the First Occurrence in a String
48%
EasyE
48%
Two PointersString+4
Solve→
Sqrt(x)
48%
EasyE
48%
MathBinary Search+1
Solve→
Binary Tree Level Order Traversal
48%
MediumM
48%
TreeBreadth-First Search+1
Solve→
Remove Element
47.5%
EasyE
47.5%
ArrayTwo Pointers
Solve→
Best Time to Buy and Sell Stock II
47.5%
MediumM
47.5%
ArrayDynamic Programming+1
Solve→
Contains Duplicate
47.5%
EasyE
47.5%
ArrayHash Table+1
Solve→
Battleships in a Board
47.5%
MediumM
47.5%
ArrayDepth-First Search+1
Solve→
Construct Binary Tree from String
47.5%
MediumM
47.5%
StringStack+3
Solve→
Maximum Average Subarray I
47.5%
EasyE
47.5%
ArraySliding Window
Solve→
Largest Rectangle in Histogram
47%
HardH
47%
ArrayStack+2
Solve→

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Rotate Array
47%
MediumM
47%
ArrayMath+1
Solve→
Single Element in a Sorted Array
47%
MediumM
47%
ArrayBinary Search
Solve→
Find K Closest Elements
47%
MediumM
47%
ArrayTwo Pointers+4
Solve→
Search Insert Position
46.5%
EasyE
46.5%
ArrayBinary Search
Solve→
Palindrome Partitioning
46.5%
MediumM
46.5%
StringDynamic Programming+1
Solve→
Minimum Size Subarray Sum
46.5%
MediumM
46.5%
ArrayBinary Search+2
Solve→
Longest Increasing Path in a Matrix
46.5%
HardH
46.5%
ArrayDynamic Programming+7
Solve→
Longest Repeating Character Replacement
46.5%
MediumM
46.5%
Hash TableString+1
Solve→
Max Area of Island
46.5%
MediumM
46.5%
ArrayDepth-First Search+3
Solve→
Daily Temperatures
46.5%
MediumM
46.5%
ArrayStack+1
Solve→
Capacity To Ship Packages Within D Days
46.5%
MediumM
46.5%
ArrayBinary Search
Solve→
Diagonal Traverse II
46.5%
MediumM
46.5%
ArraySorting+1
Solve→
Product of Two Run-Length Encoded Arrays
46.5%
MediumM
46.5%
ArrayTwo Pointers
Solve→
N-Queens
46%
HardH
46%
ArrayBacktracking+1
Solve→
Two Sum II - Input Array Is Sorted
46%
MediumM
46%
ArrayTwo Pointers+1
Solve→
Contiguous Array
46%
MediumM
46%
ArrayHash Table+1
Solve→
Combination Sum
45%
MediumM
45%
ArrayBacktracking
Solve→
Validate Binary Search Tree
45%
MediumM
45%
TreeDepth-First Search+2
Solve→
Single Number
45%
EasyE
45%
ArrayBit Manipulation
Solve→
Reorder List
45%
MediumM
45%
Linked ListTwo Pointers+2
Solve→
Course Schedule II
45%
MediumM
45%
Depth-First SearchBreadth-First Search+2
Solve→
Power of Two
45%
EasyE
45%
MathBit Manipulation+1
Solve→
First Bad Version
45%
EasyE
45%
Binary SearchInteractive
Solve→
Serialize and Deserialize Binary Tree
45%
HardH
45%
StringTree+4
Solve→
Intersection of Two Arrays
45%
EasyE
45%
ArrayHash Table+3
Solve→

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Binary Search
45%
EasyE
45%
ArrayBinary Search
Solve→
Add Two Integers
45%
EasyE
45%
Math
Solve→
Best Time to Buy and Sell Stock III
45%
HardH
45%
ArrayDynamic Programming
Solve→
Reverse Words in a String
44.4%
MediumM
44.4%
Two PointersString
Solve→
House Robber
44.4%
MediumM
44.4%
ArrayDynamic Programming
Solve→
Range Sum Query - Immutable
44.4%
EasyE
44.4%
ArrayDesign+1
Solve→
Split Array Largest Sum
44.4%
HardH
44.4%
ArrayBinary Search+3
Solve→
Minesweeper
44.4%
MediumM
44.4%
ArrayDepth-First Search+2
Solve→
Missing Element in Sorted Array
44.4%
MediumM
44.4%
ArrayBinary Search
Solve→
Permutations
43.8%
MediumM
43.8%
ArrayBacktracking
Solve→
Happy Number
43.8%
EasyE
43.8%
Hash TableMath+2
Solve→
String Compression
43.8%
MediumM
43.8%
Two PointersString
Solve→
Peak Index in a Mountain Array
43.8%
MediumM
43.8%
ArrayBinary Search+1
Solve→
Remove All Adjacent Duplicates in String II
43.8%
MediumM
43.8%
StringStack
Solve→
Word Search
43.3%
MediumM
43.3%
ArrayString+3
Solve→
Is Subsequence
43.3%
EasyE
43.3%
Two PointersString+1
Solve→
Target Sum
43.3%
MediumM
43.3%
ArrayDynamic Programming+3
Solve→
Divide Two Integers
42.6%
MediumM
42.6%
MathBit Manipulation
Solve→
Decode Ways
42.6%
MediumM
42.6%
StringDynamic Programming
Solve→
Shortest Distance from All Buildings
42.6%
HardH
42.6%
ArrayBreadth-First Search+1
Solve→
Zigzag Conversion
42%
MediumM
42%
String
Solve→
Min Stack
42%
MediumM
42%
StackDesign
Solve→
Walls and Gates
42%
MediumM
42%
ArrayBreadth-First Search+1
Solve→
Find Pivot Index
42%
EasyE
42%
ArrayPrefix Sum
Solve→
Middle of the Linked List
42%
EasyE
42%
Linked ListTwo Pointers
Solve→

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Shortest Bridge
42%
MediumM
42%
ArrayDepth-First Search+2
Solve→
Fibonacci Number
42%
EasyE
42%
MathDynamic Programming+2
Solve→
Search a 2D Matrix
41.4%
MediumM
41.4%
ArrayBinary Search+1
Solve→
Remove Duplicates from Sorted Array II
41.4%
MediumM
41.4%
ArrayTwo Pointers
Solve→
Subsets II
41.4%
MediumM
41.4%
ArrayBacktracking+1
Solve→
Rising Temperature
41.4%
EasyE
41.4%
Database
Solve→
Asteroid Collision
41.4%
MediumM
41.4%
ArrayStack+1
Solve→
Reverse Nodes in k-Group
40.7%
HardH
40.7%
Linked ListRecursion
Solve→
Count and Say
40.7%
MediumM
40.7%
String
Solve→
First Missing Positive
40.7%
HardH
40.7%
ArrayHash Table
Solve→
Maximal Rectangle
40.7%
HardH
40.7%
ArrayDynamic Programming+3
Solve→
Find Minimum in Rotated Sorted Array
40.7%
MediumM
40.7%
ArrayBinary Search
Solve→
Odd Even Linked List
40.7%
MediumM
40.7%
Linked List
Solve→
Increasing Triplet Subsequence
40.7%
MediumM
40.7%
ArrayGreedy+1
Solve→
Max Consecutive Ones
40.7%
EasyE
40.7%
Array
Solve→
Next Greater Element I
40.7%
EasyE
40.7%
ArrayHash Table+2
Solve→
Car Pooling
40.7%
MediumM
40.7%
ArraySorting+3
Solve→
Article Views I
40.7%
EasyE
40.7%
Database
Solve→
Minimum Time to Collect All Apples in a Tree
40.7%
MediumM
40.7%
Hash TableTree+3
Solve→
Binary Tree Inorder Traversal
40%
EasyE
40%
StackTree+2
Solve→
Populating Next Right Pointers in Each Node II
40%
MediumM
40%
Linked ListTree+3
Solve→
Sparse Matrix Multiplication
40%
MediumM
40%
ArrayHash Table+2
Solve→
Swim in Rising Water
40%
HardH
40%
ArrayBinary Search+7
Solve→
Shortest Path in a Hidden Grid
40%
MediumM
40%
ArrayDepth-First Search+3
Solve→
Integer to Roman
39.2%
MediumM
39.2%
Hash TableMath+1
Solve→

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Word Ladder II
39.2%
HardH
39.2%
Hash TableString+3
Solve→
Linked List Cycle
39.2%
EasyE
39.2%
Hash TableLinked List+2
Solve→
Missing Number
39.2%
EasyE
39.2%
ArrayHash Table+4
Solve→
Sort Characters By Frequency
39.2%
MediumM
39.2%
Hash TableString+4
Solve→
Rotting Oranges
39.2%
MediumM
39.2%
ArrayBreadth-First Search+1
Solve→
Simple Bank System
39.2%
MediumM
39.2%
ArrayHash Table+2
Solve→
Combination Sum II
38.5%
MediumM
38.5%
ArrayBacktracking
Solve→
Text Justification
38.5%
HardH
38.5%
ArrayString+1
Solve→
Search in Rotated Sorted Array II
38.5%
MediumM
38.5%
ArrayBinary Search
Solve→
Binary Tree Zigzag Level Order Traversal
38.5%
MediumM
38.5%
TreeBreadth-First Search+1
Solve→
Maximum Depth of Binary Tree
38.5%
EasyE
38.5%
TreeDepth-First Search+2
Solve→
Isomorphic Strings
38.5%
EasyE
38.5%
Hash TableString
Solve→
Find the Duplicate Number
38.5%
MediumM
38.5%
ArrayTwo Pointers+4
Solve→
Next Greater Element II
38.5%
MediumM
38.5%
ArrayStack+1
Solve→
Smallest Subtree with all the Deepest Nodes
38.5%
MediumM
38.5%
Hash TableTree+6
Solve→
Concatenation of Array
38.5%
EasyE
38.5%
ArraySimulation
Solve→
Wildcard Matching
37.7%
HardH
37.7%
StringDynamic Programming+2
Solve→
Jump Game II
37.7%
MediumM
37.7%
ArrayDynamic Programming+1
Solve→
Insert Interval
37.7%
MediumM
37.7%
Array
Solve→
Combinations
37.7%
MediumM
37.7%
Backtracking
Solve→
Maximum Product Subarray
37.7%
MediumM
37.7%
ArrayDynamic Programming
Solve→
Largest Number
37.7%
MediumM
37.7%
ArrayString+2
Solve→
Flatten Nested List Iterator
37.7%
MediumM
37.7%
StackTree+4
Solve→
Partition Equal Subset Sum
37.7%
MediumM
37.7%
ArrayDynamic Programming+2
Solve→
Permutation in String
37.7%
MediumM
37.7%
Hash TableTwo Pointers+2
Solve→

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Verifying an Alien Dictionary
37.7%
EasyE
37.7%
ArrayHash Table+1
Solve→
Valid Sudoku
36.8%
MediumM
36.8%
ArrayHash Table+1
Solve→
Same Tree
36.8%
EasyE
36.8%
TreeDepth-First Search+2
Solve→
Word Break II
36.8%
HardH
36.8%
ArrayHash Table+5
Solve→
Sort List
36.8%
MediumM
36.8%
Linked ListTwo Pointers+3
Solve→
Reverse String
36.8%
EasyE
36.8%
Two PointersString
Solve→
Friend Requests II: Who Has the Most Friends
36.8%
MediumM
36.8%
Database
Solve→
Valid Parenthesis String
36.8%
MediumM
36.8%
StringDynamic Programming+3
Solve→
Maximum Sum of 3 Non-Overlapping Subarrays
36.8%
HardH
36.8%
ArrayDynamic Programming+2
Solve→
Kth Largest Element in a Stream
36.8%
EasyE
36.8%
TreeDesign+4
Solve→
Frequency of the Most Frequent Element
36.8%
MediumM
36.8%
ArrayBinary Search+4
Solve→
Cutting Ribbons
36.8%
MediumM
36.8%
ArrayBinary Search
Solve→
Unique Binary Search Trees
36.8%
MediumM
36.8%
MathDynamic Programming+3
Solve→
Symmetric Tree
36%
EasyE
36%
TreeDepth-First Search+2
Solve→
Gas Station
36%
MediumM
36%
ArrayGreedy
Solve→
Second Highest Salary
36%
MediumM
36%
Database
Solve→
Kth Smallest Element in a BST
36%
MediumM
36%
TreeDepth-First Search+2
Solve→
Search a 2D Matrix II
36%
MediumM
36%
ArrayBinary Search+2
Solve→
Longest Increasing Subsequence
36%
MediumM
36%
ArrayBinary Search+2
Solve→
Task Scheduler
36%
MediumM
36%
ArrayHash Table+4
Solve→
Check if Array Is Sorted and Rotated
36%
EasyE
36%
Array
Solve→
Length of Last Word
35%
EasyE
35%
String
Solve→
Rotate List
35%
MediumM
35%
Linked ListTwo Pointers
Solve→
Combine Two Tables
35%
EasyE
35%
Database
Solve→
Maximum Size Subarray Sum Equals k
35%
MediumM
35%
ArrayHash Table+1
Solve→

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Remove K Digits
35%
MediumM
35%
StringStack+2
Solve→
Letter Case Permutation
35%
MediumM
35%
StringBacktracking+1
Solve→
Monotonic Array
35%
EasyE
35%
Array
Solve→
Sort Array By Parity
35%
EasyE
35%
ArrayTwo Pointers+1
Solve→
Greatest Common Divisor of Strings
35%
EasyE
35%
MathString+2
Solve→
Kids With the Greatest Number of Candies
35%
EasyE
35%
Array
Solve→
Lowest Common Ancestor of a Binary Tree II
35%
MediumM
35%
TreeDepth-First Search+3
Solve→
Average Time of Process per Machine
35%
EasyE
35%
Database
Solve→
Edit Distance
34%
MediumM
34%
StringDynamic Programming
Solve→
Reverse Linked List II
34%
MediumM
34%
Linked List
Solve→
Balanced Binary Tree
34%
EasyE
34%
TreeDepth-First Search+1
Solve→
Implement Trie (Prefix Tree)
34%
MediumM
34%
Hash TableString+2
Solve→
Majority Element II
34%
MediumM
34%
ArrayHash Table+3
Solve→
Next Greater Element III
34%
MediumM
34%
MathTwo Pointers+1
Solve→
Big Countries
34%
EasyE
34%
Database
Solve→
Rotate String
34%
EasyE
34%
StringString Matching
Solve→
Lowest Common Ancestor of Deepest Leaves
34%
MediumM
34%
Hash TableTree+6
Solve→
Longest Common Subsequence
34%
MediumM
34%
StringDynamic Programming+1
Solve→
Path Sum II
33%
MediumM
33%
BacktrackingTree+2
Solve→
Flatten Binary Tree to Linked List
33%
MediumM
33%
Linked ListStack+3
Solve→
Candy
33%
HardH
33%
ArrayGreedy
Solve→
Count Primes
33%
MediumM
33%
ArrayMath+5
Solve→
Delete Node in a Linked List
33%
MediumM
33%
Linked List
Solve→
Strobogrammatic Number II
33%
MediumM
33%
ArrayString+1
Solve→
Meeting Rooms
33%
EasyE
33%
ArraySorting+1
Solve→

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Binary Tree Paths
33%
EasyE
33%
StringBacktracking+3
Solve→
Integer to English Words
33%
HardH
33%
MathString+1
Solve→
Find All Anagrams in a String
33%
MediumM
33%
Hash TableString+1
Solve→
The Maze
33%
MediumM
33%
ArrayDepth-First Search+2
Solve→
Reverse Pairs
33%
HardH
33%
ArrayBinary Search+6
Solve→
Two Sum IV - Input is a BST
33%
EasyE
33%
Hash TableTwo Pointers+5
Solve→
Minimum Cost For Tickets
33%
MediumM
33%
ArrayDynamic Programming
Solve→
Rearrange Array Elements by Sign
33%
MediumM
33%
ArrayTwo Pointers+1
Solve→
Surrounded Regions
31.9%
MediumM
31.9%
ArrayDepth-First Search+3
Solve→
Evaluate Reverse Polish Notation
31.9%
MediumM
31.9%
ArrayMath+1
Solve→
Intersection of Two Linked Lists
31.9%
EasyE
31.9%
Hash TableLinked List+1
Solve→
Excel Sheet Column Title
31.9%
EasyE
31.9%
MathString
Solve→
Ransom Note
31.9%
EasyE
31.9%
Hash TableString+1
Solve→
Number of Provinces
31.9%
MediumM
31.9%
Depth-First SearchBreadth-First Search+2
Solve→
Subtree of Another Tree
31.9%
EasyE
31.9%
TreeDepth-First Search+3
Solve→
Is Graph Bipartite?
31.9%
MediumM
31.9%
Depth-First SearchBreadth-First Search+4
Solve→
Defanging an IP Address
31.9%
EasyE
31.9%
String
Solve→
Average Selling Price
31.9%
EasyE
31.9%
Database
Solve→
Customer Who Visited but Did Not Make Any Transactions
31.9%
EasyE
31.9%
Database
Solve→
Monthly Transactions I
31.9%
MediumM
31.9%
Database
Solve→
Russian Doll Envelopes
31.9%
HardH
31.9%
ArrayBinary Search+3
Solve→
Sudoku Solver
30.7%
HardH
30.7%
ArrayHash Table+4
Solve→
Construct Binary Tree from Preorder and Inorder Traversal
30.7%
MediumM
30.7%
ArrayHash Table+3
Solve→
Convert Sorted Array to Binary Search Tree
30.7%
EasyE
30.7%
ArrayDivide and Conquer+3
Solve→
Customers Who Never Order
30.7%
EasyE
30.7%
Database
Solve→

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House Robber II
30.7%
MediumM
30.7%
ArrayDynamic Programming
Solve→
The Skyline Problem
30.7%
HardH
30.7%
ArrayDivide and Conquer+6
Solve→
Non-overlapping Intervals
30.7%
MediumM
30.7%
ArrayDynamic Programming+2
Solve→
Fruit Into Baskets
30.7%
MediumM
30.7%
ArrayHash Table+1
Solve→
Sort an Array
30.7%
MediumM
30.7%
ArrayDivide and Conquer+6
Solve→
Binary Tree Cameras
30.7%
HardH
30.7%
Dynamic ProgrammingTree+3
Solve→
Running Sum of 1d Array
30.7%
EasyE
30.7%
ArrayPrefix Sum
Solve→
Check If Two String Arrays are Equivalent
30.7%
EasyE
30.7%
ArrayString
Solve→
Students and Examinations
30.7%
EasyE
30.7%
Database
Solve→
Number of Recent Calls
30.7%
EasyE
30.7%
DesignQueue+1
Solve→
Min Cost Climbing Stairs
30.7%
EasyE
30.7%
ArrayDynamic Programming
Solve→
Minimum Path Sum
29.5%
MediumM
29.5%
ArrayDynamic Programming+1
Solve→
Single Number II
29.5%
MediumM
29.5%
ArrayBit Manipulation
Solve→
Employees Earning More Than Their Managers
29.5%
EasyE
29.5%
Database
Solve→
Maximal Square
29.5%
MediumM
29.5%
ArrayDynamic Programming+1
Solve→
Fizz Buzz
29.5%
EasyE
29.5%
MathString+1
Solve→
Triangle Judgement
29.5%
EasyE
29.5%
Database
Solve→
Stickers to Spell Word
29.5%
HardH
29.5%
ArrayHash Table+6
Solve→
Add to Array-Form of Integer
29.5%
EasyE
29.5%
ArrayMath
Solve→
User Activity for the Past 30 Days I
29.5%
EasyE
29.5%
Database
Solve→
Rank Transform of an Array
29.5%
EasyE
29.5%
ArrayHash Table+1
Solve→
Minimum Time Visiting All Points
29.5%
EasyE
29.5%
ArrayMath+1
Solve→
Triangle
29.5%
MediumM
29.5%
ArrayDynamic Programming
Solve→
Implement Stack using Queues
29.5%
EasyE
29.5%
StackDesign+1
Solve→
Largest Divisible Subset
29.5%
MediumM
29.5%
ArrayMath+2
Solve→

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Swap Nodes in Pairs
28.1%
MediumM
28.1%
Linked ListRecursion
Solve→
Unique Binary Search Trees II
28.1%
MediumM
28.1%
Dynamic ProgrammingBacktracking+3
Solve→
Linked List Cycle II
28.1%
MediumM
28.1%
Hash TableLinked List+2
Solve→
Max Points on a Line
28.1%
HardH
28.1%
ArrayHash Table+4
Solve→
Invert Binary Tree
28.1%
EasyE
28.1%
TreeDepth-First Search+2
Solve→
Find the Celebrity
28.1%
MediumM
28.1%
Two PointersGraph Theory+1
Solve→
Integer Break
28.1%
MediumM
28.1%
MathDynamic Programming
Solve→
Combination Sum IV
28.1%
MediumM
28.1%
ArrayDynamic Programming
Solve→
Sum of Left Leaves
28.1%
EasyE
28.1%
TreeDepth-First Search+2
Solve→
Managers with at Least 5 Direct Reports
28.1%
MediumM
28.1%
Database
Solve→
Find Customer Referee
28.1%
EasyE
28.1%
Database
Solve→
Sum of Subarray Minimums
28.1%
MediumM
28.1%
ArrayDynamic Programming+2
Solve→
Binary Subarrays With Sum
28.1%
MediumM
28.1%
ArrayHash Table+2
Solve→
Delete Nodes And Return Forest
28.1%
MediumM
28.1%
ArrayHash Table+3
Solve→
Replace Employee ID With The Unique Identifier
28.1%
EasyE
28.1%
Database
Solve→
Create a DataFrame from List
28.1%
EasyE
28.1%
Solve→
Find the Length of the Longest Common Prefix
28.1%
MediumM
28.1%
ArrayHash Table+2
Solve→
Remove Duplicates from Sorted List
28.1%
EasyE
28.1%
Linked List
Solve→
Identify the Largest Outlier in an Array
28.1%
MediumM
28.1%
ArrayHash Table+2
Solve→
Convert Sorted List to Binary Search Tree
26.7%
MediumM
26.7%
Linked ListDivide and Conquer+3
Solve→
One Edit Distance
26.7%
MediumM
26.7%
Two PointersString
Solve→
Remove Linked List Elements
26.7%
EasyE
26.7%
Linked ListRecursion
Solve→
Word Search II
26.7%
HardH
26.7%
ArrayString+3
Solve→
Graph Valid Tree
26.7%
MediumM
26.7%
Depth-First SearchBreadth-First Search+2
Solve→
Reverse Vowels of a String
26.7%
EasyE
26.7%
Two PointersString
Solve→

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Find All Duplicates in an Array
26.7%
MediumM
26.7%
ArrayHash Table+1
Solve→
01 Matrix
26.7%
MediumM
26.7%
ArrayDynamic Programming+2
Solve→
Brick Wall
26.7%
MediumM
26.7%
ArrayHash Table
Solve→
Longest Continuous Increasing Subsequence
26.7%
EasyE
26.7%
Array
Solve→
Reorganize String
26.7%
MediumM
26.7%
Hash TableString+4
Solve→
Remove Outermost Parentheses
26.7%
EasyE
26.7%
StringStack+1
Solve→
Minimum Knight Moves
26.7%
MediumM
26.7%
Breadth-First SearchHeuristic Search+2
Solve→
Intersection of Three Sorted Arrays
26.7%
EasyE
26.7%
ArrayHash Table+2
Solve→
Product Sales Analysis III
26.7%
MediumM
26.7%
Database
Solve→
Project Employees I
26.7%
EasyE
26.7%
Database
Solve→
Unique Number of Occurrences
26.7%
EasyE
26.7%
ArrayHash Table
Solve→
Queries Quality and Percentage
26.7%
EasyE
26.7%
Database
Solve→
Maximum Length of a Concatenated String with Unique Characters
26.7%
MediumM
26.7%
ArrayString+2
Solve→
Leftmost Column with at Least a One
26.7%
MediumM
26.7%
ArrayBinary Search+2
Solve→
Angle Between Hands of a Clock
26.7%
MediumM
26.7%
Math
Solve→
Count Negative Numbers in a Sorted Matrix
26.7%
EasyE
26.7%
ArrayBinary Search+1
Solve→
Find a Corresponding Node of a Binary Tree in a Clone of That Tree
26.7%
EasyE
26.7%
TreeDepth-First Search+2
Solve→
Longest Subarray of 1's After Deleting One Element
26.7%
MediumM
26.7%
ArrayDynamic Programming+1
Solve→
Number of Subsequences That Satisfy the Given Sum Condition
26.7%
MediumM
26.7%
ArrayTwo Pointers+2
Solve→
Diameter of N-Ary Tree
26.7%
MediumM
26.7%
TreeDepth-First Search+1
Solve→
Maximum Nesting Depth of the Parentheses
26.7%
EasyE
26.7%
StringStack+1
Solve→
Sum of Unique Elements
26.7%
EasyE
26.7%
ArrayHash Table+1
Solve→
Check if One String Swap Can Make Strings Equal
26.7%
EasyE
26.7%
Hash TableString+1
Solve→
Minimum Path Cost in a Hidden Grid
26.7%
MediumM
26.7%
ArrayDepth-First Search+6
Solve→
Count Good Numbers
26.7%
MediumM
26.7%
MathRecursion
Solve→

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Count Hills and Valleys in an Array
26.7%
EasyE
26.7%
Array
Solve→
Partition List
26.7%
MediumM
26.7%
Linked ListTwo Pointers
Solve→
Employee Bonus
26.7%
EasyE
26.7%
Database
Solve→
Minimum Time Difference
26.7%
MediumM
26.7%
ArrayMath+2
Solve→
Find the Smallest Divisor Given a Threshold
26.7%
MediumM
26.7%
ArrayBinary Search
Solve→
Online Stock Span
26.7%
MediumM
26.7%
StackDesign+2
Solve→
Distinct Subsequences
26.7%
HardH
26.7%
StringDynamic Programming
Solve→
Rank Scores
26.7%
MediumM
26.7%
Database
Solve→
Find the Most Common Response
26.7%
MediumM
26.7%
ArrayHash Table+2
Solve→
Longest Substring with At Most Two Distinct Characters
26.7%
MediumM
26.7%
Hash TableString+1
Solve→
Unique Paths II
25.1%
MediumM
25.1%
ArrayDynamic Programming+1
Solve→
Restore IP Addresses
25.1%
MediumM
25.1%
StringBacktracking
Solve→
Design Add and Search Words Data Structure
25.1%
MediumM
25.1%
StringDepth-First Search+2
Solve→
Summary Ranges
25.1%
EasyE
25.1%
Array
Solve→
H-Index
25.1%
MediumM
25.1%
ArraySorting+1
Solve→
H-Index II
25.1%
MediumM
25.1%
ArrayBinary Search
Solve→
Word Pattern
25.1%
EasyE
25.1%
Hash TableString
Solve→
Power of Three
25.1%
EasyE
25.1%
MathRecursion
Solve→
Largest BST Subtree
25.1%
MediumM
25.1%
Dynamic ProgrammingTree+4
Solve→
Intersection of Two Arrays II
25.1%
EasyE
25.1%
ArrayHash Table+3
Solve→
Valid Perfect Square
25.1%
EasyE
25.1%
MathBinary Search
Solve→
First Unique Character in a String
25.1%
EasyE
25.1%
Hash TableString+2
Solve→
Assign Cookies
25.1%
EasyE
25.1%
ArrayTwo Pointers+3
Solve→
Total Hamming Distance
25.1%
MediumM
25.1%
ArrayMath+1
Solve→
Friend Requests I: Overall Acceptance Rate
25.1%
EasyE
25.1%
Database
Solve→

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Average of Levels in Binary Tree
25.1%
EasyE
25.1%
TreeDepth-First Search+2
Solve→
Decode Ways II
25.1%
HardH
25.1%
StringDynamic Programming
Solve→
Design Search Autocomplete System
25.1%
HardH
25.1%
StringDepth-First Search+5
Solve→
Number of Longest Increasing Subsequence
25.1%
MediumM
25.1%
ArrayDynamic Programming+3
Solve→
Top K Frequent Words
25.1%
MediumM
25.1%
ArrayHash Table+6
Solve→
Subarray Product Less Than K
25.1%
MediumM
25.1%
ArrayBinary Search+2
Solve→
Flood Fill
25.1%
EasyE
25.1%
ArrayDepth-First Search+2
Solve→
Largest Plus Sign
25.1%
MediumM
25.1%
ArrayDynamic Programming
Solve→
Cheapest Flights Within K Stops
25.1%
MediumM
25.1%
Dynamic ProgrammingDepth-First Search+4
Solve→
Design Circular Queue
25.1%
MediumM
25.1%
ArrayLinked List+2
Solve→
Maximum Sum Circular Subarray
25.1%
MediumM
25.1%
ArrayDivide and Conquer+3
Solve→
Partition Array for Maximum Sum
25.1%
MediumM
25.1%
ArrayDynamic Programming
Solve→
Validate Binary Tree Nodes
25.1%
MediumM
25.1%
TreeDepth-First Search+4
Solve→
Web Crawler Multithreaded
25.1%
MediumM
25.1%
Depth-First SearchBreadth-First Search+1
Solve→
Calculate Amount Paid in Taxes
25.1%
EasyE
25.1%
ArraySimulation
Solve→
Page Recommendations
25.1%
MediumM
25.1%
Database
Solve→
Number of Substrings Containing All Three Characters
25.1%
MediumM
25.1%
Hash TableString+1
Solve→
Minimum Number of Days to Make m Bouquets
25.1%
MediumM
25.1%
ArrayBinary Search
Solve→
Binary Search Tree Iterator II
25.1%
MediumM
25.1%
StackTree+4
Solve→
Max Number of K-Sum Pairs
25.1%
MediumM
25.1%
ArrayHash Table+2
Solve→
Minimum Cost to Reach Destination in Time
25.1%
HardH
25.1%
ArrayDynamic Programming+2
Solve→
Page Recommendations II
25.1%
HardH
25.1%
Database
Solve→
Build Array from Permutation
25.1%
EasyE
25.1%
ArraySimulation
Solve→
Strong Friendship
25.1%
MediumM
25.1%
Database
Solve→
Count Pairs Whose Sum is Less than Target
25.1%
EasyE
25.1%
ArrayTwo Pointers+2
Solve→

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Lemonade Change
25.1%
EasyE
25.1%
ArrayGreedy
Solve→
Find Winner on a Tic Tac Toe Game
25.1%
EasyE
25.1%
ArrayHash Table+2
Solve→
N-Queens II
25.1%
HardH
25.1%
BacktrackingAlgorithm X
Solve→
Find Kth Bit in Nth Binary String
25.1%
MediumM
25.1%
StringRecursion+1
Solve→
Redundant Connection
25.1%
MediumM
25.1%
Depth-First SearchBreadth-First Search+2
Solve→
Largest Odd Number in String
25.1%
EasyE
25.1%
MathString+1
Solve→
Reverse String II
25.1%
EasyE
25.1%
Two PointersString
Solve→
Unique Paths III
25.1%
HardH
25.1%
ArrayBacktracking+3
Solve→
Immediate Food Delivery II
25.1%
MediumM
25.1%
Database
Solve→
Fraction to Recurring Decimal
25.1%
MediumM
25.1%
Hash TableMath+1
Solve→
Find Missing and Repeated Values
25.1%
EasyE
25.1%
ArrayHash Table+2
Solve→
Find Numbers with Even Number of Digits
25.1%
EasyE
25.1%
ArrayMath
Solve→
Minimum Deletions for At Most K Distinct Characters
25.1%
EasyE
25.1%
Hash TableString+3
Solve→
Substring with Concatenation of All Words
23.4%
HardH
23.4%
Hash TableString+1
Solve→
Minimum Depth of Binary Tree
23.4%
EasyE
23.4%
TreeDepth-First Search+2
Solve→
Path Sum
23.4%
EasyE
23.4%
TreeDepth-First Search+2
Solve→
Read N Characters Given Read4
23.4%
EasyE
23.4%
ArraySimulation+1
Solve→
Duplicate Emails
23.4%
EasyE
23.4%
Database
Solve→
Repeated DNA Sequences
23.4%
MediumM
23.4%
Hash TableString+6
Solve→
Reverse Bits
23.4%
EasyE
23.4%
Divide and ConquerBit Manipulation
Solve→
Paint House II
23.4%
HardH
23.4%
ArrayDynamic Programming
Solve→
Remove Duplicate Letters
23.4%
MediumM
23.4%
StringStack+2
Solve→
Sum of Two Integers
23.4%
MediumM
23.4%
MathBit Manipulation
Solve→
Find K Pairs with Smallest Sums
23.4%
MediumM
23.4%
ArrayHeap (Priority Queue)
Solve→
Convert a Number to Hexadecimal
23.4%
EasyE
23.4%
MathString+1
Solve→

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Longest Palindrome
23.4%
EasyE
23.4%
Hash TableString+1
Solve→
Pacific Atlantic Water Flow
23.4%
MediumM
23.4%
ArrayDepth-First Search+2
Solve→
Delete Node in a BST
23.4%
MediumM
23.4%
TreeBinary Search Tree+1
Solve→
Longest Palindromic Subsequence
23.4%
MediumM
23.4%
StringDynamic Programming
Solve→
Get Highest Answer Rate Question
23.4%
MediumM
23.4%
Database
Solve→
Set Mismatch
23.4%
EasyE
23.4%
ArrayHash Table+2
Solve→
Baseball Game
23.4%
EasyE
23.4%
ArrayStack+1
Solve→
Best Time to Buy and Sell Stock with Transaction Fee
23.4%
MediumM
23.4%
ArrayDynamic Programming+1
Solve→
Prefix and Suffix Search
23.4%
HardH
23.4%
ArrayHash Table+3
Solve→
Open the Lock
23.4%
MediumM
23.4%
ArrayHash Table+3
Solve→
Minimum Swaps To Make Sequences Increasing
23.4%
HardH
23.4%
ArrayDynamic Programming
Solve→
Subarray Sums Divisible by K
23.4%
MediumM
23.4%
ArrayHash Table+1
Solve→
Maximum Binary Tree II
23.4%
MediumM
23.4%
TreeBinary Tree
Solve→
Maximum Level Sum of a Binary Tree
23.4%
MediumM
23.4%
TreeDepth-First Search+2
Solve→
Element Appearing More Than 25% In Sorted Array
23.4%
EasyE
23.4%
Array
Solve→
Reported Posts II
23.4%
MediumM
23.4%
Database
Solve→
Balance a Binary Search Tree
23.4%
MediumM
23.4%
Divide and ConquerGreedy+4
Solve→
Number of Visible People in a Queue
23.4%
HardH
23.4%
ArrayStack+1
Solve→
Apply Discount Every n Orders
23.4%
MediumM
23.4%
ArrayHash Table+1
Solve→
Product of the Last K Numbers
23.4%
MediumM
23.4%
ArrayMath+3
Solve→
Find the Kth Smallest Sum of a Matrix With Sorted Rows
23.4%
HardH
23.4%
ArrayBinary Search+2
Solve→
Construct the Lexicographically Largest Valid Sequence
23.4%
MediumM
23.4%
ArrayBacktracking
Solve→
Invalid Tweets
23.4%
EasyE
23.4%
Database
Solve→
Count Items Matching a Rule
23.4%
EasyE
23.4%
ArrayString
Solve→
Faulty Sensor
23.4%
EasyE
23.4%
ArrayTwo Pointers
Solve→

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Number of Ways to Arrive at Destination
23.4%
MediumM
23.4%
Dynamic ProgrammingGraph Theory+3
Solve→
Separate the Digits in an Array
23.4%
EasyE
23.4%
ArraySimulation
Solve→
Product Price at a Given Date
23.4%
MediumM
23.4%
Database
Solve→
All O`one Data Structure
23.4%
HardH
23.4%
Hash TableLinked List+2
Solve→
Check if the Sentence Is Pangram
23.4%
EasyE
23.4%
Hash TableString
Solve→
Inorder Successor in BST II
23.4%
MediumM
23.4%
TreeBinary Search Tree+1
Solve→
Add Digits
23.4%
EasyE
23.4%
MathSimulation+1
Solve→
Investments in 2016
23.4%
MediumM
23.4%
Database
Solve→
Maximum Points You Can Obtain from Cards
23.4%
MediumM
23.4%
ArraySliding Window+1
Solve→
Threshold Majority Queries
23.4%
HardH
23.4%
ArrayHash Table+4
Solve→
Minimum Cost Path with Edge Reversals
23.4%
MediumM
23.4%
Graph TheoryHeap (Priority Queue)+1
Solve→
Read N Characters Given read4 II - Call Multiple Times
21.5%
HardH
21.5%
ArraySimulation+1
Solve→
Number of 1 Bits
21.5%
EasyE
21.5%
Divide and ConquerBit Manipulation
Solve→
Implement Queue using Stacks
21.5%
EasyE
21.5%
StackDesign+1
Solve→
Inorder Successor in BST
21.5%
MediumM
21.5%
TreeDepth-First Search+2
Solve→
Range Sum Query 2D - Immutable
21.5%
MediumM
21.5%
ArrayDesign+2
Solve→
Counting Bits
21.5%
EasyE
21.5%
Dynamic ProgrammingBit Manipulation
Solve→
Insert Delete GetRandom O(1) - Duplicates allowed
21.5%
HardH
21.5%
ArrayHash Table+3
Solve→
Path Sum III
21.5%
MediumM
21.5%
TreeDepth-First Search+1
Solve→
132 Pattern
21.5%
MediumM
21.5%
ArrayBinary Search+3
Solve→
Hamming Distance
21.5%
EasyE
21.5%
Bit Manipulation
Solve→
Minimum Absolute Difference in BST
21.5%
EasyE
21.5%
TreeDepth-First Search+3
Solve→
Encode and Decode TinyURL
21.5%
MediumM
21.5%
Hash TableString+2
Solve→
Number Of Corner Rectangles
21.5%
MediumM
21.5%
ArrayMath+2
Solve→
Jewels and Stones
21.5%
EasyE
21.5%
Hash TableString
Solve→

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Search in a Binary Search Tree
21.5%
EasyE
21.5%
TreeBinary Search Tree+1
Solve→
Design HashMap
21.5%
EasyE
21.5%
ArrayHash Table+3
Solve→
Backspace String Compare
21.5%
EasyE
21.5%
Two PointersString+2
Solve→
Boats to Save People
21.5%
MediumM
21.5%
ArrayTwo Pointers+3
Solve→
Groups of Special-Equivalent Strings
21.5%
MediumM
21.5%
ArrayHash Table+2
Solve→
Time Based Key-Value Store
21.5%
MediumM
21.5%
Hash TableString+2
Solve→
Moving Stones Until Consecutive
21.5%
MediumM
21.5%
MathBrainteaser
Solve→
Moving Stones Until Consecutive II
21.5%
MediumM
21.5%
ArrayMath+2
Solve→
Project Employees II
21.5%
EasyE
21.5%
Database
Solve→
Project Employees III
21.5%
MediumM
21.5%
Database
Solve→
Game Play Analysis IV
21.5%
MediumM
21.5%
Database
Solve→
Reported Posts
21.5%
EasyE
21.5%
Database
Solve→
User Activity for the Past 30 Days II
21.5%
EasyE
21.5%
Database
Solve→
Web Crawler
21.5%
MediumM
21.5%
StringDepth-First Search+2
Solve→
Report Contiguous Dates
21.5%
HardH
21.5%
Database
Solve→
Count Number of Nice Subarrays
21.5%
MediumM
21.5%
ArrayHash Table+3
Solve→
Number of Comments per Post
21.5%
EasyE
21.5%
Database
Solve→
Ads Performance
21.5%
EasyE
21.5%
Database
Solve→
Maximum Number of Events That Can Be Attended
21.5%
MediumM
21.5%
ArrayGreedy+2
Solve→
Customers Who Bought Products A and B but Not C
21.5%
MediumM
21.5%
Database
Solve→
Make Two Arrays Equal by Reversing Subarrays
21.5%
EasyE
21.5%
ArrayHash Table+1
Solve→
Maximum Number of Darts Inside of a Circular Dartboard
21.5%
HardH
21.5%
ArrayMath+1
Solve→
Apples & Oranges
21.5%
MediumM
21.5%
Database
Solve→
Sum of Beauty of All Substrings
21.5%
MediumM
21.5%
Hash TableString+1
Solve→
Maximum Compatibility Score Sum
21.5%
MediumM
21.5%
ArrayDynamic Programming+10
Solve→

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Count Nodes Equal to Sum of Descendants
21.5%
MediumM
21.5%
TreeDepth-First Search+1
Solve→
Longest Subsequence Repeated k Times
21.5%
HardH
21.5%
Hash TableTwo Pointers+4
Solve→
Finding the Topic of Each Post
21.5%
HardH
21.5%
Database
Solve→
Steps to Make Array Non-decreasing
21.5%
MediumM
21.5%
ArrayLinked List+4
Solve→
Task Scheduler II
21.5%
MediumM
21.5%
ArrayHash Table+1
Solve→
Words Within Two Edits of Dictionary
21.5%
MediumM
21.5%
ArrayString+1
Solve→
Check Knight Tour Configuration
21.5%
MediumM
21.5%
ArrayDepth-First Search+3
Solve→
Burst Balloons
21.5%
HardH
21.5%
ArrayDynamic Programming
Solve→
Remove Duplicates from Sorted List II
21.5%
MediumM
21.5%
Linked ListTwo Pointers
Solve→
Customers Who Bought All Products
21.5%
MediumM
21.5%
Database
Solve→
Count Complete Tree Nodes
21.5%
MediumM
21.5%
Binary SearchBit Manipulation+2
Solve→
Delete Duplicate Emails
21.5%
EasyE
21.5%
Database
Solve→
Movie Rating
21.5%
MediumM
21.5%
Database
Solve→
Even Odd Tree
21.5%
MediumM
21.5%
TreeBreadth-First Search+1
Solve→
Remove Sub-Folders from the Filesystem
21.5%
MediumM
21.5%
ArrayString+2
Solve→
Count Binary Substrings
21.5%
EasyE
21.5%
Two PointersString
Solve→
Tenth Line
21.5%
EasyE
21.5%
Shell
Solve→
Number of Operations to Make Network Connected
21.5%
MediumM
21.5%
Depth-First SearchBreadth-First Search+2
Solve→
Not Boring Movies
21.5%
EasyE
21.5%
Database
Solve→
Shifting Letters II
21.5%
MediumM
21.5%
ArrayString+1
Solve→
Transpose Matrix
21.5%
EasyE
21.5%
ArrayMatrix+1
Solve→
Palindrome Partitioning II
21.5%
HardH
21.5%
StringDynamic Programming
Solve→
Find the Highest Altitude
21.5%
EasyE
21.5%
ArrayPrefix Sum
Solve→
Arranging Coins
21.5%
EasyE
21.5%
MathBinary Search
Solve→
Find the K-th Character in String Game I
21.5%
EasyE
21.5%
MathBit Manipulation+2
Solve→

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Find Subsequence of Length K With the Largest Sum
21.5%
EasyE
21.5%
ArrayHash Table+2
Solve→
Find Lucky Integer in an Array
21.5%
EasyE
21.5%
ArrayHash Table+1
Solve→
Coin Change II
21.5%
MediumM
21.5%
ArrayDynamic Programming+2
Solve→
Fruits Into Baskets II
21.5%
EasyE
21.5%
ArrayBinary Search+3
Solve→
Bitwise OR of Even Numbers in an Array
21.5%
EasyE
21.5%
ArrayBit Manipulation+1
Solve→
Stone Game
21.5%
MediumM
21.5%
ArrayMath+4
Solve→
Design Ride Sharing System
21.5%
MediumM
21.5%
Hash TableDesign+2
Solve→
Find the Smallest Balanced Index
21.5%
MediumM
21.5%
ArrayPrefix Sum
Solve→
All the Pairs With the Maximum Number of Common Followers
21.5%
MediumM
21.5%
Database
Solve→
Spiral Matrix II
19.4%
MediumM
19.4%
ArrayMatrix+1
Solve→
Binary Tree Preorder Traversal
19.4%
EasyE
19.4%
StackTree+2
Solve→
Consecutive Numbers
19.4%
MediumM
19.4%
Database
Solve→
Encode and Decode Strings
19.4%
MediumM
19.4%
ArrayString+1
Solve→
Game of Life
19.4%
MediumM
19.4%
ArrayMatrix+1
Solve→
Longest Absolute File Path
19.4%
MediumM
19.4%
StringStack+1
Solve→
Evaluate Division
19.4%
MediumM
19.4%
ArrayString+7
Solve→
Trapping Rain Water II
19.4%
HardH
19.4%
ArrayBreadth-First Search+2
Solve→
Find All Numbers Disappeared in an Array
19.4%
EasyE
19.4%
ArrayHash Table
Solve→
Validate IP Address
19.4%
MediumM
19.4%
String
Solve→
Add Bold Tag in String
19.4%
MediumM
19.4%
ArrayHash Table+4
Solve→
Merge Two Binary Trees
19.4%
EasyE
19.4%
TreeDepth-First Search+2
Solve→
Sum of Square Numbers
19.4%
MediumM
19.4%
MathTwo Pointers+1
Solve→
Maximum Width of Binary Tree
19.4%
MediumM
19.4%
TreeDepth-First Search+2
Solve→
Candy Crush
19.4%
MediumM
19.4%
ArrayTwo Pointers+2
Solve→
Construct Binary Search Tree from Preorder Traversal
19.4%
MediumM
19.4%
ArrayStack+4
Solve→

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Nearest Exit from Entrance in Maze
19.4%
MediumM
19.4%
ArrayBreadth-First Search+1
Solve→
Find a Peak Element II
19.4%
MediumM
19.4%
ArrayBinary Search+1
Solve→
Find if Path Exists in Graph
19.4%
EasyE
19.4%
Depth-First SearchBreadth-First Search+2
Solve→
K Radius Subarray Averages
19.4%
MediumM
19.4%
ArraySliding Window
Solve→
Ugly Number
19.4%
EasyE
19.4%
Math
Solve→
Minimum Falling Path Sum
19.4%
MediumM
19.4%
ArrayDynamic Programming+1
Solve→
Lexicographical Numbers
19.4%
MediumM
19.4%
Depth-First SearchTrie
Solve→
Stock Price Fluctuation
19.4%
MediumM
19.4%
Hash TableDesign+3
Solve→
Count of Smaller Numbers After Self
19.4%
HardH
19.4%
ArrayBinary Search+6
Solve→
Binary Tree Pruning
19.4%
MediumM
19.4%
TreeDepth-First Search+1
Solve→
Defuse the Bomb
19.4%
EasyE
19.4%
ArraySliding Window
Solve→
Sequential Digits
19.4%
MediumM
19.4%
Enumeration
Solve→
Divisor Game
19.4%
EasyE
19.4%
MathDynamic Programming+3
Solve→
Maximum Score After Splitting a String
19.4%
EasyE
19.4%
StringPrefix Sum
Solve→
Minimum Number of Operations to Move All Balls to Each Box
19.4%
MediumM
19.4%
ArrayString+1
Solve→
Find the Prefix Common Array of Two Arrays
19.4%
MediumM
19.4%
ArrayHash Table+1
Solve→
Find Eventual Safe States
19.4%
MediumM
19.4%
Depth-First SearchBreadth-First Search+4
Solve→
Valid Mountain Array
19.4%
EasyE
19.4%
Array
Solve→
Longest Harmonious Subsequence
19.4%
EasyE
19.4%
ArrayHash Table+3
Solve→
Shuffle the Array
19.4%
EasyE
19.4%
Array
Solve→
Meeting Scheduler
19.4%
MediumM
19.4%
ArrayTwo Pointers+1
Solve→
Rabbits in Forest
19.4%
MediumM
19.4%
ArrayHash Table+2
Solve→
Count the Hidden Sequences
19.4%
MediumM
19.4%
ArrayPrefix Sum
Solve→
Finding 3-Digit Even Numbers
19.4%
EasyE
19.4%
ArrayHash Table+3
Solve→
Maximum Difference by Remapping a Digit
19.4%
EasyE
19.4%
MathGreedy
Solve→

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Interleaving String
19.4%
MediumM
19.4%
StringDynamic Programming
Solve→
Richest Customer Wealth
19.4%
EasyE
19.4%
ArrayMatrix
Solve→
Can Make Arithmetic Progression From Sequence
19.4%
EasyE
19.4%
ArraySorting
Solve→
Minimum Pair Removal to Sort Array I
19.4%
EasyE
19.4%
ArrayHash Table+5
Solve→
Binary Tree Postorder Traversal
17%
EasyE
17%
StackTree+2
Solve→
Palindrome Permutation
17%
EasyE
17%
Hash TableString+1
Solve→
Bulb Switcher
17%
MediumM
17%
MathBrainteaser
Solve→
Maximum Product of Three Numbers
17%
EasyE
17%
ArrayMath+1
Solve→
Partition Labels
17%
MediumM
17%
Hash TableTwo Pointers+2
Solve→
Shortest Subarray with Sum at Least K
17%
HardH
17%
ArrayBinary Search+5
Solve→
Tree Diameter
17%
MediumM
17%
TreeDepth-First Search+4
Solve→
Parsing A Boolean Expression
17%
HardH
17%
StringStack+1
Solve→
Shortest Path in a Grid with Obstacles Elimination
17%
HardH
17%
ArrayBreadth-First Search+1
Solve→
Count Good Nodes in Binary Tree
17%
MediumM
17%
TreeDepth-First Search+2
Solve→
Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
17%
MediumM
17%
ArrayQueue+4
Solve→
Path With Minimum Effort
17%
MediumM
17%
ArrayBinary Search+6
Solve→
Unique Length-3 Palindromic Subsequences
17%
MediumM
17%
Hash TableString+2
Solve→
To Be Or Not To Be
17%
EasyE
17%
Solve→
Sum of Subarray Ranges
17%
MediumM
17%
ArrayStack+1
Solve→
Find Duplicate File in System
17%
MediumM
17%
ArrayHash Table+1
Solve→
Consecutive Characters
17%
EasyE
17%
String
Solve→
Guess the Word
17%
HardH
17%
ArrayMath+4
Solve→
Shortest Palindrome
17%
HardH
17%
StringRolling Hash+5
Solve→
Final Prices With a Special Discount in a Shop
17%
EasyE
17%
ArrayStack+1
Solve→
Arithmetic Slices
17%
MediumM
17%
ArrayDynamic Programming+1
Solve→

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Score of Parentheses
17%
MediumM
17%
StringStack+1
Solve→
Reshape the Matrix
17%
EasyE
17%
ArrayMatrix+1
Solve→
Sort Array by Increasing Frequency
17%
EasyE
17%
ArrayHash Table+1
Solve→
Minimum Number of Changes to Make Binary String Beautiful
17%
MediumM
17%
String
Solve→
Perfect Number
17%
EasyE
17%
Math
Solve→
Percentage of Users Attended a Contest
17%
EasyE
17%
Database
Solve→
Rotating the Box
17%
MediumM
17%
ArrayTwo Pointers+1
Solve→
Check if a Parentheses String Can Be Valid
17%
MediumM
17%
StringStack+2
Solve→
Longest Strictly Increasing or Strictly Decreasing Subarray
17%
EasyE
17%
Array
Solve→
Minimum Absolute Difference
17%
EasyE
17%
ArraySorting
Solve→
Snakes and Ladders
17%
MediumM
17%
ArrayBreadth-First Search+1
Solve→
Minimum Operations to Exceed Threshold Value II
17%
MediumM
17%
ArrayHeap (Priority Queue)+1
Solve→
Longest Duplicate Substring
17%
HardH
17%
StringBinary Search+8
Solve→
Zero Array Transformation II
17%
MediumM
17%
ArrayTwo Pointers+2
Solve→
Validate Stack Sequences
17%
MediumM
17%
ArrayStack+1
Solve→
Maximum Absolute Sum of Any Subarray
17%
MediumM
17%
ArrayDynamic Programming
Solve→
Minimum Deletions to Make String Balanced
17%
MediumM
17%
StringDynamic Programming+1
Solve→
Count Equal and Divisible Pairs in an Array
17%
EasyE
17%
Array
Solve→
Largest Color Value in a Directed Graph
17%
HardH
17%
Hash TableString+6
Solve→
Last Person to Fit in the Bus
17%
MediumM
17%
Database
Solve→
Third Maximum Number
17%
EasyE
17%
ArraySorting
Solve→
Minimize the Maximum Difference of Pairs
17%
MediumM
17%
ArrayBinary Search+3
Solve→
Repeated Substring Pattern
17%
EasyE
17%
StringString Matching+2
Solve→
New 21 Game
17%
MediumM
17%
MathDynamic Programming+2
Solve→
Maximum Average Pass Ratio
17%
MediumM
17%
ArrayGreedy+1
Solve→

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Best Time to Buy and Sell Stock using Strategy
17%
MediumM
17%
ArraySliding Window+1
Solve→
Minimum Absolute Difference Between Elements With Constraint
17%
MediumM
17%
ArrayBinary Search+1
Solve→
Greatest Sum Divisible by Three
17%
MediumM
17%
ArrayDynamic Programming+2
Solve→
Find the Safest Path in a Grid
17%
MediumM
17%
ArrayBinary Search+4
Solve→
Maximum Length Substring With Two Occurrences
17%
EasyE
17%
Hash TableString+1
Solve→
Dungeon Game
14.4%
HardH
14.4%
ArrayDynamic Programming+1
Solve→
Department Highest Salary
14.4%
MediumM
14.4%
Database
Solve→
Best Time to Buy and Sell Stock IV
14.4%
HardH
14.4%
ArrayDynamic Programming
Solve→
Best Meeting Point
14.4%
HardH
14.4%
ArrayMath+2
Solve→
Power of Four
14.4%
EasyE
14.4%
MathBit Manipulation+1
Solve→
Find the Difference
14.4%
EasyE
14.4%
Hash TableString+2
Solve→
Add Two Numbers II
14.4%
MediumM
14.4%
Linked ListMath+1
Solve→
LFU Cache
14.4%
HardH
14.4%
Hash TableLinked List+2
Solve→
Island Perimeter
14.4%
EasyE
14.4%
ArrayDepth-First Search+2
Solve→
Flatten a Multilevel Doubly Linked List
14.4%
MediumM
14.4%
Linked ListDepth-First Search+1
Solve→
Hand of Straights
14.4%
MediumM
14.4%
ArrayHash Table+2
Solve→
Leaf-Similar Trees
14.4%
EasyE
14.4%
TreeDepth-First Search+1
Solve→
Last Stone Weight
14.4%
EasyE
14.4%
ArrayHeap (Priority Queue)
Solve→
Shortest Common Supersequence
14.4%
HardH
14.4%
StringDynamic Programming+1
Solve→
Maximum Candies Allocated to K Children
14.4%
MediumM
14.4%
ArrayBinary Search
Solve→
Design Skiplist
14.4%
HardH
14.4%
Linked ListDesign
Solve→
Number of Closed Islands
14.4%
MediumM
14.4%
ArrayDepth-First Search+3
Solve→
All Elements in Two Binary Search Trees
14.4%
MediumM
14.4%
TreeDepth-First Search+3
Solve→
Maximum Sum BST in Binary Tree
14.4%
HardH
14.4%
Dynamic ProgrammingTree+4
Solve→
Maximum Population Year
14.4%
EasyE
14.4%
ArrayCounting+1
Solve→

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Confirmation Rate
14.4%
MediumM
14.4%
Database
Solve→
Root Equals Sum of Children
14.4%
EasyE
14.4%
TreeBinary Tree
Solve→
Sort the People
14.4%
EasyE
14.4%
ArrayHash Table+2
Solve→
Counter
14.4%
EasyE
14.4%
Solve→
Array Prototype Last
14.4%
EasyE
14.4%
Solve→
Permutation Sequence
14.4%
HardH
14.4%
MathRecursion
Solve→
Count Largest Group
14.4%
EasyE
14.4%
Hash TableMath+1
Solve→
Split Linked List in Parts
14.4%
MediumM
14.4%
Linked List
Solve→
Fix Names in a Table
14.4%
EasyE
14.4%
Database
Solve→
Make Sum Divisible by P
14.4%
MediumM
14.4%
ArrayHash Table+1
Solve→
Delete the Middle Node of a Linked List
14.4%
MediumM
14.4%
Linked ListTwo Pointers
Solve→
Number of Ways to Form a Target String Given a Dictionary
14.4%
HardH
14.4%
ArrayString+1
Solve→
Partition Array Into Two Arrays to Minimize Sum Difference
14.4%
HardH
14.4%
ArrayTwo Pointers+7
Solve→
Check If N and Its Double Exist
14.4%
EasyE
14.4%
ArrayHash Table+3
Solve→
Nim Game
14.4%
EasyE
14.4%
MathBrainteaser+4
Solve→
Count Square Submatrices with All Ones
14.4%
MediumM
14.4%
ArrayDynamic Programming+1
Solve→
Sign of the Product of an Array
14.4%
EasyE
14.4%
ArrayMath
Solve→
Number of Islands II
14.4%
HardH
14.4%
ArrayHash Table+1
Solve→
Block Placement Queries
14.4%
HardH
14.4%
ArrayBinary Search+3
Solve→
Exchange Seats
14.4%
MediumM
14.4%
Database
Solve→
Word Subsets
14.4%
MediumM
14.4%
ArrayHash Table+1
Solve→
Mini Parser
14.4%
MediumM
14.4%
StringStack+1
Solve→
Number of Zero-Filled Subarrays
14.4%
MediumM
14.4%
ArrayMath
Solve→
Maximum Gap
14.4%
MediumM
14.4%
ArraySorting+3
Solve→
Find Smallest Letter Greater Than Target
14.4%
EasyE
14.4%
ArrayBinary Search
Solve→

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How Many Numbers Are Smaller Than the Current Number
14.4%
EasyE
14.4%
ArrayHash Table+2
Solve→
Minimum Distance Between BST Nodes
14.4%
EasyE
14.4%
TreeDepth-First Search+3
Solve→
Letter Tile Possibilities
14.4%
MediumM
14.4%
Hash TableString+2
Solve→
The k-th Lexicographical String of All Happy Strings of Length n
14.4%
MediumM
14.4%
StringBacktracking
Solve→
Successful Pairs of Spells and Potions
14.4%
MediumM
14.4%
ArrayTwo Pointers+2
Solve→
Merge Two 2D Arrays by Summing Values
14.4%
EasyE
14.4%
ArrayHash Table+1
Solve→
Count Total Number of Colored Cells
14.4%
MediumM
14.4%
Math
Solve→
Put Marbles in Bags
14.4%
HardH
14.4%
ArrayGreedy+2
Solve→
Maximum Profit in Job Scheduling
14.4%
HardH
14.4%
ArrayBinary Search+2
Solve→
Find the Count of Good Integers
14.4%
HardH
14.4%
Hash TableMath+2
Solve→
Count Symmetric Integers
14.4%
EasyE
14.4%
MathEnumeration
Solve→
Count Square Sum Triples
14.4%
EasyE
14.4%
MathEnumeration
Solve→
Count of Range Sum
14.4%
HardH
14.4%
ArrayBinary Search+6
Solve→
Find Words Containing Character
14.4%
EasyE
14.4%
ArrayString
Solve→
Domino and Tromino Tiling
14.4%
MediumM
14.4%
Dynamic Programming
Solve→
Three Consecutive Odds
14.4%
EasyE
14.4%
Array
Solve→
Find the Maximum Sum of Node Values
14.4%
HardH
14.4%
ArrayDynamic Programming+4
Solve→
Divisible and Non-divisible Sums Difference
14.4%
EasyE
14.4%
Math
Solve→
Recover Binary Search Tree
14.4%
MediumM
14.4%
TreeDepth-First Search+2
Solve→
Distribute Candies Among Children II
14.4%
MediumM
14.4%
MathCombinatorics+1
Solve→
Number of Matching Subsequences
14.4%
MediumM
14.4%
ArrayHash Table+5
Solve→
Product Sales Analysis I
14.4%
EasyE
14.4%
Database
Solve→
To Lower Case
14.4%
EasyE
14.4%
String
Solve→
Maximum Difference Between Increasing Elements
14.4%
EasyE
14.4%
Array
Solve→
Maximum Product of Two Elements in an Array
14.4%
EasyE
14.4%
ArraySorting+1
Solve→

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Smallest Number in Infinite Set
14.4%
MediumM
14.4%
Hash TableDesign+2
Solve→
Sum of k-Mirror Numbers
14.4%
HardH
14.4%
MathEnumeration
Solve→
Collect Coins in a Tree
14.4%
HardH
14.4%
ArrayTree+2
Solve→
Repeated String Match
14.4%
MediumM
14.4%
StringString Matching+3
Solve→
Count Number of Trapezoids II
14.4%
HardH
14.4%
ArrayHash Table+2
Solve→
Game Play Analysis I
14.4%
EasyE
14.4%
Database
Solve→
Reorder Routes to Make All Paths Lead to the City Zero
14.4%
MediumM
14.4%
Depth-First SearchBreadth-First Search+1
Solve→
Find Most Frequent Vowel and Consonant
14.4%
EasyE
14.4%
Hash TableString+1
Solve→
Valid Triangle Number
14.4%
MediumM
14.4%
ArrayTwo Pointers+3
Solve→
Find Books with No Available Copies
14.4%
EasyE
14.4%
Database
Solve→
Maximum Number of Operations to Move Ones to the End
14.4%
MediumM
14.4%
StringGreedy+1
Solve→
Maximum Product of Splitted Binary Tree
14.4%
MediumM
14.4%
TreeDepth-First Search+1
Solve→
Number of Strings That Appear as Substrings in Word
14.4%
EasyE
14.4%
ArrayString
Solve→
Maximize Active Section with Trade I
14.4%
MediumM
14.4%
StringEnumeration
Solve→
Binary Tree Level Order Traversal II
11.4%
MediumM
11.4%
TreeBreadth-First Search+1
Solve→
Pascal's Triangle II
11.4%
EasyE
11.4%
ArrayDynamic Programming
Solve→
Department Top Three Salaries
11.4%
HardH
11.4%
Database
Solve→
Number of Digit One
11.4%
HardH
11.4%
MathDynamic Programming+1
Solve→
Minimum Height Trees
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+2
Solve→
Number of Connected Components in an Undirected Graph
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+2
Solve→
Patching Array
11.4%
HardH
11.4%
ArrayGreedy
Solve→
Reconstruct Itinerary
11.4%
HardH
11.4%
ArrayString+7
Solve→
UTF-8 Validation
11.4%
MediumM
11.4%
ArrayBit Manipulation
Solve→
Queue Reconstruction by Height
11.4%
MediumM
11.4%
ArrayBinary Indexed Tree+2
Solve→
Find Largest Value in Each Tree Row
11.4%
MediumM
11.4%
TreeDepth-First Search+2
Solve→

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Swapping Nodes in a Linked List
11.4%
MediumM
11.4%
Linked ListTwo Pointers
Solve→
Array Partition
11.4%
EasyE
11.4%
ArrayGreedy+2
Solve→
Human Traffic of Stadium
11.4%
HardH
11.4%
Database
Solve→
Dota2 Senate
11.4%
MediumM
11.4%
StringGreedy+1
Solve→
Partition to K Equal Sum Subsets
11.4%
MediumM
11.4%
ArrayDynamic Programming+4
Solve→
Design HashSet
11.4%
EasyE
11.4%
ArrayHash Table+3
Solve→
Most Common Word
11.4%
EasyE
11.4%
ArrayHash Table+2
Solve→
Subarrays with K Different Integers
11.4%
HardH
11.4%
ArrayHash Table+2
Solve→
Cousins in Binary Tree
11.4%
EasyE
11.4%
TreeDepth-First Search+2
Solve→
Two City Scheduling
11.4%
MediumM
11.4%
ArrayGreedy+3
Solve→
Find in Mountain Array
11.4%
HardH
11.4%
ArrayBinary Search+2
Solve→
Minimum Insertions to Balance a Parentheses String
11.4%
MediumM
11.4%
StringStack+2
Solve→
Crawler Log Folder
11.4%
EasyE
11.4%
ArrayString+1
Solve→
Primary Department for Each Employee
11.4%
EasyE
11.4%
Database
Solve→
Check if an Original String Exists Given Two Encoded Strings
11.4%
HardH
11.4%
StringDynamic Programming
Solve→
Count Subarrays With Score Less Than K
11.4%
HardH
11.4%
ArrayBinary Search+2
Solve→
Remove Nodes From Linked List
11.4%
MediumM
11.4%
Linked ListStack+2
Solve→
Count Elements With Maximum Frequency
11.4%
EasyE
11.4%
ArrayHash Table+1
Solve→
Ugly Number II
11.4%
MediumM
11.4%
Hash TableMath+2
Solve→
Stone Game II
11.4%
MediumM
11.4%
ArrayMath+5
Solve→
Longest Substring with At Most K Distinct Characters
11.4%
MediumM
11.4%
Hash TableString+1
Solve→
Find Closest Number to Zero
11.4%
EasyE
11.4%
Array
Solve→
Insert Greatest Common Divisors in Linked List
11.4%
MediumM
11.4%
Linked ListMath+1
Solve→
Find the Longest Substring Containing Vowels in Even Counts
11.4%
MediumM
11.4%
Hash TableString+2
Solve→
Check If Array Pairs Are Divisible by k
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→

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Max Stack
11.4%
HardH
11.4%
Linked ListStack+3
Solve→
Equal Row and Column Pairs
11.4%
MediumM
11.4%
ArrayHash Table+2
Solve→
Split a String in Balanced Strings
11.4%
EasyE
11.4%
StringGreedy+1
Solve→
Smallest Range Covering Elements from K Lists
11.4%
HardH
11.4%
ArrayHash Table+4
Solve→
Minimum Moves to Equal Array Elements
11.4%
MediumM
11.4%
ArrayMath
Solve→
Longest String Chain
11.4%
MediumM
11.4%
ArrayHash Table+4
Solve→
Find if Array Can Be Sorted
11.4%
MediumM
11.4%
ArrayBit Manipulation+1
Solve→
Add Two Promises
11.4%
EasyE
11.4%
Solve→
Shortest Subarray With OR at Least K II
11.4%
MediumM
11.4%
ArrayBit Manipulation+1
Solve→
Nested List Weight Sum II
11.4%
MediumM
11.4%
StackDepth-First Search+1
Solve→
Design Hit Counter
11.4%
MediumM
11.4%
ArrayBinary Search+3
Solve→
Number of Common Factors
11.4%
EasyE
11.4%
MathEnumeration+3
Solve→
Sliding Puzzle
11.4%
HardH
11.4%
ArrayDynamic Programming+7
Solve→
Move Pieces to Obtain a String
11.4%
MediumM
11.4%
Two PointersString
Solve→
Valid Phone Numbers
11.4%
EasyE
11.4%
Shell
Solve→
Minimum Limit of Balls in a Bag
11.4%
MediumM
11.4%
ArrayBinary Search
Solve→
Find Longest Special Substring That Occurs Thrice I
11.4%
MediumM
11.4%
Hash TableString+3
Solve→
Possible Bipartition
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+4
Solve→
Maximum Earnings From Taxi
11.4%
MediumM
11.4%
ArrayHash Table+3
Solve→
All Ancestors of a Node in a Directed Acyclic Graph
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+3
Solve→
My Calendar I
11.4%
MediumM
11.4%
ArrayBinary Search+3
Solve→
Determine Whether Matrix Can Be Obtained By Rotation
11.4%
EasyE
11.4%
ArrayMatrix
Solve→
Car Fleet
11.4%
MediumM
11.4%
ArrayStack+2
Solve→
Best Sightseeing Pair
11.4%
MediumM
11.4%
ArrayDynamic Programming
Solve→
Count Ways To Build Good Strings
11.4%
MediumM
11.4%
Dynamic Programming
Solve→

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Counting Words With a Given Prefix
11.4%
EasyE
11.4%
ArrayString+1
Solve→
Find the Difference of Two Arrays
11.4%
EasyE
11.4%
ArrayHash Table
Solve→
Meeting Rooms III
11.4%
HardH
11.4%
ArrayHash Table+3
Solve→
Clear Digits
11.4%
EasyE
11.4%
StringStack+1
Solve→
Remove All Occurrences of a Substring
11.4%
MediumM
11.4%
StringStack+1
Solve→
Rank Transform of a Matrix
11.4%
HardH
11.4%
ArrayUnion-Find+4
Solve→
Delete and Earn
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→
Second Minimum Node In a Binary Tree
11.4%
EasyE
11.4%
TreeDepth-First Search+1
Solve→
Delete Nodes From Linked List Present in Array
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→
Water Bottles
11.4%
EasyE
11.4%
MathSimulation
Solve→
Restaurant Growth
11.4%
MediumM
11.4%
Database
Solve→
Design Parking System
11.4%
EasyE
11.4%
DesignSimulation+1
Solve→
House Robber IV
11.4%
MediumM
11.4%
ArrayBinary Search+2
Solve→
Construct String from Binary Tree
11.4%
MediumM
11.4%
StringTree+2
Solve→
Flatten Deeply Nested Array
11.4%
MediumM
11.4%
Solve→
Matchsticks to Square
11.4%
MediumM
11.4%
ArrayDynamic Programming+3
Solve→
Keys and Rooms
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+1
Solve→
Push Dominoes
11.4%
MediumM
11.4%
Two PointersString+1
Solve→
Zero Array Transformation III
11.4%
MediumM
11.4%
ArrayTwo Pointers+4
Solve→
Minimum Cost of Buying Candies With Discount
11.4%
EasyE
11.4%
ArrayGreedy+1
Solve→
Binary Watch
11.4%
EasyE
11.4%
BacktrackingBit Manipulation
Solve→
Network Delay Time
11.4%
MediumM
11.4%
Depth-First SearchBreadth-First Search+4
Solve→
Find the Lexicographically Largest String From the Box I
11.4%
MediumM
11.4%
Two PointersString+1
Solve→
Minimum Number of Vertices to Reach All Nodes
11.4%
MediumM
11.4%
Graph TheoryDirected Acyclic Graph
Solve→
Find the Peaks
11.4%
EasyE
11.4%
ArrayEnumeration
Solve→

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Find the Original Typed String I
11.4%
EasyE
11.4%
String
Solve→
Maximum XOR of Two Numbers in an Array
11.4%
MediumM
11.4%
ArrayHash Table+2
Solve→
Maximum Matching of Players With Trainers
11.4%
MediumM
11.4%
ArrayTwo Pointers+2
Solve→
Sum of Root To Leaf Binary Numbers
11.4%
EasyE
11.4%
TreeDepth-First Search+1
Solve→
Maximum 69 Number
11.4%
EasyE
11.4%
MathGreedy
Solve→
24 Game
11.4%
HardH
11.4%
ArrayMath+1
Solve→
Minimum Time to Repair Cars
11.4%
MediumM
11.4%
ArrayBinary Search
Solve→
Binary Tree Longest Consecutive Sequence
11.4%
MediumM
11.4%
TreeDepth-First Search+2
Solve→
Jump Game IV
11.4%
HardH
11.4%
ArrayHash Table+1
Solve→
Find the XOR of Numbers Which Appear Twice
11.4%
EasyE
11.4%
ArrayHash Table+1
Solve→
Largest Perimeter Triangle
11.4%
EasyE
11.4%
ArrayMath+4
Solve→
Minimum Genetic Mutation
11.4%
MediumM
11.4%
Hash TableString+2
Solve→
4Sum II
11.4%
MediumM
11.4%
ArrayHash Table
Solve→
Count Unguarded Cells in the Grid
11.4%
MediumM
11.4%
ArrayMatrix+1
Solve→
Power Grid Maintenance
11.4%
MediumM
11.4%
ArrayHash Table+6
Solve→
Restore the Array From Adjacent Pairs
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→
Unpopular Books
11.4%
MediumM
11.4%
Database
Solve→
Contains Duplicate III
11.4%
HardH
11.4%
ArraySliding Window+3
Solve→
Flipping an Image
11.4%
EasyE
11.4%
ArrayTwo Pointers+3
Solve→
Count Partitions With Max-Min Difference at Most K
11.4%
MediumM
11.4%
ArrayDynamic Programming+4
Solve→
Count Special Triplets
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→
Nth Highest Salary
11.4%
MediumM
11.4%
Database
Solve→
Minimum Operations to Make Array Sum Divisible by K
11.4%
EasyE
11.4%
ArrayMath
Solve→
Delete Columns to Make Sorted
11.4%
EasyE
11.4%
ArrayString+1
Solve→
Minimum Bit Flips to Convert Number
11.4%
EasyE
11.4%
Bit Manipulation
Solve→

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Last Day Where You Can Still Cross
11.4%
HardH
11.4%
ArrayBinary Search+4
Solve→
Four Divisors
11.4%
MediumM
11.4%
ArrayMath+2
Solve→
Maximum Matrix Sum
11.4%
MediumM
11.4%
ArrayGreedy+1
Solve→
Separate Squares I
11.4%
MediumM
11.4%
ArrayBinary Search
Solve→
Find the Largest Area of Square Inside Two Rectangles
11.4%
MediumM
11.4%
ArrayMath+1
Solve→
Minimum Cost Path with Teleportations
11.4%
HardH
11.4%
ArrayDynamic Programming+1
Solve→
Trionic Array II
11.4%
HardH
11.4%
ArrayDynamic Programming
Solve→
Longest Happy Prefix
11.4%
HardH
11.4%
StringRolling Hash+4
Solve→
Longest Balanced Substring I
11.4%
MediumM
11.4%
Hash TableString+2
Solve→
Longest Balanced Substring II
11.4%
MediumM
11.4%
Hash TableString+1
Solve→
Maximum Number of Vowels in a Substring of Given Length
11.4%
MediumM
11.4%
StringSliding Window
Solve→
Number of Steps to Reduce a Number in Binary Representation to One
11.4%
MediumM
11.4%
StringBit Manipulation+1
Solve→
Minimum Number of Flips to Make the Binary String Alternating
11.4%
MediumM
11.4%
StringDynamic Programming+1
Solve→
Number of Steps to Reduce a Number to Zero
11.4%
EasyE
11.4%
MathBit Manipulation
Solve→
Minimum Absolute Distance Between Mirror Pairs
11.4%
MediumM
11.4%
ArrayHash Table+1
Solve→
Minimum Element After Replacement With Digit Sum
11.4%
EasyE
11.4%
ArrayMath
Solve→
Maximum Building Height
11.4%
HardH
11.4%
ArrayMath+1
Solve→
Perfect Squares
11.4%
MediumM
11.4%
MathDynamic Programming+3
Solve→
Find the Number of Subsequences With Equal GCD
11.4%
HardH
11.4%
ArrayMath+4
Solve→
Smallest Palindromic Rearrangement I
11.4%
MediumM
11.4%
StringSorting+1
Solve→
Predict the Winner
11.4%
MediumM
11.4%
ArrayMath+5
Solve→
Permutations II
8%
MediumM
8%
ArrayBacktracking+1
Solve→
Factorial Trailing Zeroes
8%
MediumM
8%
Math
Solve→
Bulls and Cows
8%
MediumM
8%
Hash TableString+1
Solve→
House Robber III
8%
MediumM
8%
Dynamic ProgrammingTree+3
Solve→

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Shuffle an Array
8%
MediumM
8%
ArrayMath+2
Solve→
Find Mode in Binary Search Tree
8%
EasyE
8%
TreeDepth-First Search+2
Solve→
IPO
8%
HardH
8%
ArrayGreedy+2
Solve→
Minimum Window Subsequence
8%
HardH
8%
StringDynamic Programming+1
Solve→
Basic Calculator III
8%
HardH
8%
MathString+2
Solve→
K-th Symbol in Grammar
8%
MediumM
8%
MathBit Manipulation+1
Solve→
All Paths From Source to Target
8%
MediumM
8%
BacktrackingDepth-First Search+3
Solve→
Rectangle Overlap
8%
EasyE
8%
MathGeometry
Solve→
Find Common Characters
8%
EasyE
8%
ArrayHash Table+1
Solve→
Maximum Difference Between Node and Ancestor
8%
MediumM
8%
TreeDepth-First Search+1
Solve→
Recover a Tree From Preorder Traversal
8%
HardH
8%
StringTree+2
Solve→
Grumpy Bookstore Owner
8%
MediumM
8%
ArraySliding Window
Solve→
Relative Sort Array
8%
EasyE
8%
ArrayHash Table+4
Solve→
N-th Tribonacci Number
8%
EasyE
8%
MathDynamic Programming+1
Solve→
Number of Dice Rolls With Target Sum
8%
MediumM
8%
Dynamic Programming
Solve→
Search Suggestions System
8%
MediumM
8%
ArrayString+4
Solve→
Subtract the Product and Sum of Digits of an Integer
8%
EasyE
8%
Math
Solve→
Number of Good Pairs
8%
EasyE
8%
ArrayHash Table+2
Solve→
Find Users With Valid E-Mails
8%
EasyE
8%
Database
Solve→
The Number of Employees Which Report to Each Employee
8%
EasyE
8%
Database
Solve→
Minimize Maximum Pair Sum in Array
8%
MediumM
8%
ArrayTwo Pointers+2
Solve→
Find Unique Binary String
8%
MediumM
8%
ArrayHash Table+2
Solve→
Time Needed to Buy Tickets
8%
EasyE
8%
ArrayQueue+1
Solve→
Maximum Sum of Distinct Subarrays With Length K
8%
MediumM
8%
ArrayHash Table+1
Solve→
Design Memory Allocator
8%
MediumM
8%
ArrayHash Table+2
Solve→

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Apply Transform Over Each Element in Array
8%
EasyE
8%
Solve→
Event Emitter
8%
MediumM
8%
Solve→
Find Common Elements Between Two Arrays
8%
EasyE
8%
ArrayHash Table
Solve→
Count Subarrays Where Max Element Appears at Least K Times
8%
MediumM
8%
ArraySliding Window
Solve→
Length of the Longest Subsequence That Sums to Target
8%
MediumM
8%
ArrayDynamic Programming+2
Solve→
Shortest Unsorted Continuous Subarray
8%
MediumM
8%
ArrayTwo Pointers+4
Solve→
Spiral Matrix III
8%
MediumM
8%
ArrayMatrix+1
Solve→
Sum of Digits of String After Convert
8%
EasyE
8%
StringSimulation
Solve→
Find Words That Can Be Formed by Characters
8%
EasyE
8%
ArrayHash Table+2
Solve→
Score of a String
8%
EasyE
8%
String
Solve→
Guess Number Higher or Lower
8%
EasyE
8%
Binary SearchInteractive
Solve→
Longest Subarray With Maximum Bitwise AND
8%
MediumM
8%
ArrayBit Manipulation+1
Solve→
Extra Characters in a String
8%
MediumM
8%
ArrayHash Table+3
Solve→
Linked List in Binary Tree
8%
MediumM
8%
Linked ListTree+2
Solve→
Find the Minimum and Maximum Number of Nodes Between Critical Points
8%
MediumM
8%
Linked List
Solve→
Scramble String
8%
HardH
8%
StringDynamic Programming
Solve→
Divide Intervals Into Minimum Number of Groups
8%
MediumM
8%
ArrayTwo Pointers+4
Solve→
Ones and Zeroes
8%
MediumM
8%
ArrayString+3
Solve→
Insert into a Binary Search Tree
8%
MediumM
8%
TreeBinary Search Tree+1
Solve→
Minimum Array End
8%
MediumM
8%
Bit Manipulation
Solve→
Nth Digit
8%
MediumM
8%
MathBinary Search
Solve→
The Maze II
8%
MediumM
8%
ArrayDepth-First Search+8
Solve→
Longest Substring with At Least K Repeating Characters
8%
MediumM
8%
Hash TableString+2
Solve→
Find Score of an Array After Marking All Elements
8%
MediumM
8%
ArrayHash Table+3
Solve→
Stone Game III
8%
HardH
8%
ArrayMath+4
Solve→

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Number of Ways to Split Array
8%
MediumM
8%
ArrayPrefix Sum
Solve→
String Matching in an Array
8%
EasyE
8%
ArrayString+1
Solve→
Sort Vowels in a String
8%
MediumM
8%
StringSorting
Solve→
Construct K Palindrome Strings
8%
MediumM
8%
Hash TableString+2
Solve→
2 Keys Keyboard
8%
MediumM
8%
MathDynamic Programming
Solve→
Detect Squares
8%
MediumM
8%
ArrayHash Table+3
Solve→
Spiral Matrix IV
8%
MediumM
8%
ArrayLinked List+2
Solve→
Minimum Cost to Make at Least One Valid Path in a Grid
8%
HardH
8%
ArrayBreadth-First Search+6
Solve→
Long Pressed Name
8%
EasyE
8%
Two PointersString
Solve→
Course Schedule IV
8%
MediumM
8%
Depth-First SearchBreadth-First Search+2
Solve→
Maximum Number of Fish in a Grid
8%
MediumM
8%
ArrayDepth-First Search+3
Solve→
Divide Nodes Into the Maximum Number of Groups
8%
HardH
8%
Depth-First SearchBreadth-First Search+2
Solve→
Special Array I
8%
EasyE
8%
Array
Solve→
Tuple with Same Product
8%
MediumM
8%
ArrayHash Table+1
Solve→
Max Sum of a Pair With Equal Sum of Digits
8%
MediumM
8%
ArrayHash Table+2
Solve→
Max Chunks To Make Sorted
8%
MediumM
8%
ArrayStack+3
Solve→
Construct Binary Tree from Preorder and Postorder Traversal
8%
MediumM
8%
ArrayHash Table+3
Solve→
Number of Sub-arrays With Odd Sum
8%
MediumM
8%
ArrayMath+2
Solve→
Number of Submatrices That Sum to Target
8%
HardH
8%
ArrayHash Table+2
Solve→
Number of Students Unable to Eat Lunch
8%
EasyE
8%
ArrayStack+2
Solve→
Apply Operations to an Array
8%
EasyE
8%
ArrayTwo Pointers+1
Solve→
Most Stones Removed with Same Row or Column
8%
MediumM
8%
Hash TableDepth-First Search+3
Solve→
Magnetic Force Between Two Balls
8%
MediumM
8%
ArrayBinary Search+1
Solve→
Image Smoother
8%
EasyE
8%
ArrayMatrix
Solve→
Display the First Three Rows
8%
EasyE
8%
Solve→

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Longest Nice Subarray
8%
MediumM
8%
ArrayBit Manipulation+1
Solve→
Minimum Cost Walk in Weighted Graph
8%
HardH
8%
ArrayBit Manipulation+2
Solve→
Shortest Path Visiting All Nodes
8%
HardH
8%
Dynamic ProgrammingBit Manipulation+3
Solve→
Two Furthest Houses With Different Colors
8%
EasyE
8%
ArrayGreedy
Solve→
Group Sold Products By The Date
8%
EasyE
8%
Database
Solve→
Convert BST to Greater Tree
8%
MediumM
8%
TreeDepth-First Search+2
Solve→
Find Building Where Alice and Bob Can Meet
8%
HardH
8%
ArrayBinary Search+5
Solve→
Logger Rate Limiter
8%
EasyE
8%
Hash TableDesign+1
Solve→
Number of Valid Words in a Sentence
8%
EasyE
8%
String
Solve→
Count the Number of Good Subarrays
8%
MediumM
8%
ArrayHash Table+1
Solve→
Count the Number of Fair Pairs
8%
MediumM
8%
ArrayTwo Pointers+2
Solve→
String Compression III
8%
MediumM
8%
String
Solve→
Word Frequency
8%
MediumM
8%
Shell
Solve→
Nth Magical Number
8%
HardH
8%
MathBinary Search+2
Solve→
Find the Closest Palindrome
8%
HardH
8%
MathString
Solve→
Minimum Operations to Make Binary Array Elements Equal to One I
8%
MediumM
8%
ArrayBit Manipulation+3
Solve→
Concatenated Divisibility
8%
HardH
8%
ArrayDynamic Programming+2
Solve→
Painting the Walls
8%
HardH
8%
ArrayDynamic Programming
Solve→
Count Number of Balanced Permutations
8%
HardH
8%
MathString+2
Solve→
Find Minimum Time to Finish All Jobs
8%
HardH
8%
ArrayDynamic Programming+3
Solve→
Painting a Grid With Three Different Colors
8%
HardH
8%
Dynamic ProgrammingGraph Coloring
Solve→
Maximum Units on a Truck
8%
EasyE
8%
ArrayGreedy+1
Solve→
Timeout Cancellation
8%
EasyE
8%
Solve→
Lexicographically Smallest Equivalent String
8%
MediumM
8%
StringUnion-Find
Solve→
Design File System
8%
MediumM
8%
Hash TableString+2
Solve→

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Kth Smallest Number in Multiplication Table
8%
HardH
8%
MathBinary Search
Solve→
Lexicographically Minimum String After Removing Stars
8%
MediumM
8%
Hash TableString+3
Solve→
Maximum Difference Between Even and Odd Frequency II
8%
HardH
8%
StringSliding Window+2
Solve→
Maximum Difference Between Adjacent Elements in a Circular Array
8%
EasyE
8%
Array
Solve→
Minimum Time to Complete Trips
8%
MediumM
8%
ArrayBinary Search
Solve→
Count the Number of Arrays with K Matching Adjacent Elements
8%
HardH
8%
MathCombinatorics+1
Solve→
Rotated Digits
8%
MediumM
8%
MathDynamic Programming
Solve→
Find All K-Distant Indices in an Array
8%
EasyE
8%
ArrayTwo Pointers
Solve→
Furthest Building You Can Reach
8%
MediumM
8%
ArrayGreedy+1
Solve→
Continuous Subarrays
8%
MediumM
8%
ArrayQueue+4
Solve→
Sales Person
8%
EasyE
8%
Database
Solve→
Find Root of N-Ary Tree
8%
MediumM
8%
Hash TableBit Manipulation+2
Solve→
Sum of Absolute Differences in a Sorted Array
8%
MediumM
8%
ArrayMath+1
Solve→
Valid Word
8%
EasyE
8%
String
Solve→
Minimum Difference in Sums After Removal of Elements
8%
HardH
8%
ArrayDynamic Programming+1
Solve→
Minimum Number Game
8%
EasyE
8%
ArraySorting+2
Solve→
Single-Threaded CPU
8%
MediumM
8%
ArraySorting+1
Solve→
Maximum Unique Subarray Sum After Deletion
8%
EasyE
8%
ArrayHash Table+1
Solve→
Resulting String After Adjacent Removals
8%
MediumM
8%
StringStack+1
Solve→
Shortest Cycle in a Graph
8%
HardH
8%
Breadth-First SearchGraph Theory
Solve→
Check If a String Contains All Binary Codes of Size K
8%
MediumM
8%
Hash TableString+4
Solve→
Longest Arithmetic Subsequence of Given Difference
8%
MediumM
8%
ArrayHash Table+1
Solve→
Maximum Number of Occurrences of a Substring
8%
MediumM
8%
Hash TableString+1
Solve→
Count Submatrices With All Ones
8%
MediumM
8%
ArrayDynamic Programming+3
Solve→
Count the Number of Powerful Integers
8%
HardH
8%
MathString+1
Solve→

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Minimum Operations to Make the Integer Zero
8%
MediumM
8%
Bit ManipulationBrainteaser+1
Solve→
Vowel Spellchecker
8%
MediumM
8%
ArrayHash Table+1
Solve→
Replace Elements with Greatest Element on Right Side
8%
EasyE
8%
Array
Solve→
Distant Barcodes
8%
MediumM
8%
ArrayHash Table+4
Solve→
Minimum Score Triangulation of Polygon
8%
MediumM
8%
ArrayDynamic Programming+2
Solve→
Avoid Flood in The City
8%
MediumM
8%
ArrayHash Table+3
Solve→
Find the Minimum Amount of Time to Brew Potions
8%
MediumM
8%
ArraySimulation+1
Solve→
Min Cost to Connect All Points
8%
MediumM
8%
ArrayUnion-Find+5
Solve→
The Two Sneaky Numbers of Digitville
8%
EasyE
8%
ArrayHash Table+1
Solve→
Finding Pairs With a Certain Sum
8%
MediumM
8%
ArrayHash Table+1
Solve→
Maximum Number of Distinct Elements After Operations
8%
MediumM
8%
ArrayGreedy+1
Solve→
Maximum Height by Stacking Cuboids
8%
HardH
8%
ArrayDynamic Programming+1
Solve→
Check If Digits Are Equal in String After Operations I
8%
EasyE
8%
MathString+3
Solve→
Make Array Elements Equal to Zero
8%
EasyE
8%
ArraySimulation+1
Solve→
Find X-Sum of All K-Long Subarrays I
8%
EasyE
8%
ArrayHash Table+2
Solve→
Cherry Pickup II
8%
HardH
8%
ArrayDynamic Programming+1
Solve→
Tree Node
8%
MediumM
8%
Database
Solve→
Maximum Subarray Sum With Length Divisible by K
8%
MediumM
8%
ArrayHash Table+1
Solve→
Longest Even Odd Subarray With Threshold
8%
EasyE
8%
ArraySliding Window
Solve→
Maximum Running Time of N Computers
8%
HardH
8%
ArrayBinary Search+2
Solve→
Corporate Flight Bookings
8%
MediumM
8%
ArrayPrefix Sum
Solve→
Decoded String at Index
8%
MediumM
8%
StringStack
Solve→
Best Time to Buy and Sell Stock V
8%
MediumM
8%
ArrayDynamic Programming
Solve→
Find Minimum in Rotated Sorted Array II
8%
HardH
8%
ArrayBinary Search
Solve→
Fair Candy Swap
8%
EasyE
8%
ArrayHash Table+2
Solve→

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Max Dot Product of Two Subsequences
8%
HardH
8%
ArrayDynamic Programming+1
Solve→
Last Stone Weight II
8%
MediumM
8%
ArrayDynamic Programming+2
Solve→
Find Bottom Left Tree Value
8%
MediumM
8%
TreeDepth-First Search+2
Solve→
Maximize the Confusion of an Exam
8%
MediumM
8%
StringBinary Search+2
Solve→
Minimum Removals to Balance Array
8%
MediumM
8%
ArrayBinary Search+2
Solve→
Reverse Words in a String III
8%
EasyE
8%
Two PointersString
Solve→
Stream of Characters
8%
HardH
8%
ArrayString+4
Solve→
Minimum Changes To Make Alternating Binary String
8%
EasyE
8%
String
Solve→
Binary Tree Longest Consecutive Sequence II
8%
MediumM
8%
TreeDepth-First Search+2
Solve→
Furthest Point From Origin
8%
EasyE
8%
StringCounting
Solve→
Cyclically Rotating a Grid
8%
MediumM
8%
ArrayMatrix+1
Solve→
Minimum Moves to Make Array Complementary
8%
MediumM
8%
ArrayHash Table+1
Solve→
Jump Game VII
8%
MediumM
8%
StringDynamic Programming+2
Solve→
Construct Quad Tree
8%
MediumM
8%
ArrayDivide and Conquer+2
Solve→
Left and Right Sum Differences
8%
EasyE
8%
ArrayPrefix Sum
Solve→
Create Binary Tree From Descriptions
8%
MediumM
8%
ArrayHash Table+2
Solve→
Maximum Total Subarray Value I
8%
MediumM
8%
ArrayGreedy
Solve→
Number of Ways to Assign Edge Weights I
8%
MediumM
8%
MathTree+1
Solve→
Minimum String Length After Removing Substrings
8%
EasyE
8%
StringStack+1
Solve→
Count Subarrays With Majority Element I
8%
MediumM
8%
ArrayHash Table+5
Solve→
Find the Maximum Number of Elements in Subset
8%
MediumM
8%
ArrayHash Table+1
Solve→
Minimum Cost to Move Chips to The Same Position
8%
EasyE
8%
ArrayMath+1
Solve→
Path Existence Queries in a Graph I
8%
MediumM
8%
ArrayHash Table+3
Solve→
Count Numbers with Unique Digits
8%
MediumM
8%
MathDynamic Programming+1
Solve→
Find Missing Elements
8%
EasyE
8%
ArrayHash Table+1
Solve→

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Smallest Divisible Digit Product I
8%
EasyE
8%
MathEnumeration
Solve→
Find the Lexicographically Smallest Valid Sequence
8%
MediumM
8%
Two PointersString+2
Solve→
Rectangle Area
5%
MediumM
5%
MathGeometry
Solve→
Range Module
5%
HardH
5%
DesignSegment Tree+1
Solve→
Bus Routes
5%
HardH
5%
ArrayHash Table+1
Solve→
Most Profit Assigning Work
5%
MediumM
5%
ArrayTwo Pointers+3
Solve→
Complete Binary Tree Inserter
5%
MediumM
5%
TreeBreadth-First Search+2
Solve→
Sum of Nodes with Even-Valued Grandparent
5%
MediumM
5%
TreeDepth-First Search+2
Solve→
Snapshot Array
5%
MediumM
5%
ArrayHash Table+3
Solve→
Convert Binary Number in a Linked List to Integer
5%
EasyE
5%
Linked ListMath
Solve→
Destination City
5%
EasyE
5%
ArrayHash Table+1
Solve→
Average Waiting Time
5%
MediumM
5%
ArraySimulation
Solve→
Count of Matches in Tournament
5%
EasyE
5%
MathSimulation
Solve→
Step-By-Step Directions From a Binary Tree Node to Another
5%
MediumM
5%
StringTree+4
Solve→
Adding Spaces to a String
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Largest Local Values in a Matrix
5%
EasyE
5%
ArrayMatrix
Solve→
Count Subarrays With Fixed Bounds
5%
HardH
5%
ArrayQueue+2
Solve→
Find the Pivot Integer
5%
EasyE
5%
MathPrefix Sum
Solve→
Debounce
5%
MediumM
5%
Solve→
Find the Maximum Length of Valid Subsequence II
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Path with Maximum Probability
5%
MediumM
5%
ArrayGraph Theory+3
Solve→
Convert 1D Array Into 2D Array
5%
EasyE
5%
ArrayMatrix+1
Solve→
Design In-Memory File System
5%
HardH
5%
Hash TableString+3
Solve→
K Inverse Pairs Array
5%
HardH
5%
Dynamic Programming
Solve→
Shortest Way to Form String
5%
MediumM
5%
Two PointersString+2
Solve→

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Count the Number of Substrings With Dominant Ones
5%
MediumM
5%
StringEnumeration
Solve→
Maximum Total Damage With Spell Casting
5%
MediumM
5%
ArrayHash Table+5
Solve→
K-th Smallest in Lexicographical Order
5%
HardH
5%
Trie
Solve→
Remove Max Number of Edges to Keep Graph Fully Traversable
5%
HardH
5%
Union-FindGraph Theory
Solve→
Split a String Into the Max Number of Unique Substrings
5%
MediumM
5%
Hash TableString+1
Solve→
Insertion Sort List
5%
MediumM
5%
Linked ListSorting
Solve→
Maximum Vacation Days
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Longest Square Streak in an Array
5%
MediumM
5%
ArrayHash Table+3
Solve→
Longest Subsequence With Limited Sum
5%
EasyE
5%
ArrayBinary Search+3
Solve→
Minimum Number of Removals to Make Mountain Array
5%
HardH
5%
ArrayBinary Search+2
Solve→
Seat Reservation Manager
5%
MediumM
5%
DesignHeap (Priority Queue)
Solve→
Shortest Subarray to be Removed to Make Array Sorted
5%
MediumM
5%
ArrayTwo Pointers+3
Solve→
Find the Power of K-Size Subarrays I
5%
MediumM
5%
ArraySliding Window
Solve→
Self Dividing Numbers
5%
EasyE
5%
Math
Solve→
Find Champion II
5%
MediumM
5%
Graph Theory
Solve→
Take Gifts From the Richest Pile
5%
EasyE
5%
ArrayHeap (Priority Queue)+1
Solve→
Linked List Random Node
5%
MediumM
5%
Linked ListMath+2
Solve→
Number of Laser Beams in a Bank
5%
MediumM
5%
ArrayMath+2
Solve→
Design Circular Deque
5%
MediumM
5%
ArrayLinked List+2
Solve→
Number Complement
5%
EasyE
5%
Bit Manipulation
Solve→
Maximum Frequency Stack
5%
HardH
5%
Hash TableStack+2
Solve→
Heaters
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Count Prefix and Suffix Pairs I
5%
EasyE
5%
ArrayString+4
Solve→
Longest Repeating Substring
5%
MediumM
5%
StringBinary Search+6
Solve→
Maximum and Minimum Sums of at Most Size K Subsequences
5%
MediumM
5%
ArrayMath+3
Solve→

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Print Binary Tree
5%
MediumM
5%
TreeDepth-First Search+2
Solve→
Count Servers that Communicate
5%
MediumM
5%
ArrayDepth-First Search+4
Solve→
Maximum Twin Sum of a Linked List
5%
MediumM
5%
Linked ListTwo Pointers+1
Solve→
Count Number of Maximum Bitwise-OR Subsets
5%
MediumM
5%
ArrayBacktracking+2
Solve→
Minimum Area Rectangle
5%
MediumM
5%
ArrayHash Table+3
Solve→
Similar String Groups
5%
HardH
5%
ArrayHash Table+4
Solve→
Find the Punishment Number of an Integer
5%
MediumM
5%
MathBacktracking
Solve→
Max Consecutive Ones II
5%
MediumM
5%
ArrayDynamic Programming+1
Solve→
Most Profitable Path in a Tree
5%
MediumM
5%
ArrayTree+3
Solve→
Length of Longest Fibonacci Subsequence
5%
MediumM
5%
ArrayHash Table+1
Solve→
Find the Town Judge
5%
EasyE
5%
ArrayHash Table+1
Solve→
Check if Number is a Sum of Powers of Three
5%
MediumM
5%
Math
Solve→
Closest Prime Numbers in Range
5%
MediumM
5%
MathNumber Theory+3
Solve→
Function Composition
5%
EasyE
5%
Solve→
Minimum Recolors to Get K Consecutive Black Blocks
5%
EasyE
5%
StringSliding Window
Solve→
Beautiful Array
5%
MediumM
5%
ArrayMath+1
Solve→
Final Array State After K Multiplication Operations II
5%
HardH
5%
ArrayHeap (Priority Queue)+1
Solve→
Detect Capital
5%
EasyE
5%
String
Solve→
Minimum Operations to Make a Uni-Value Grid
5%
MediumM
5%
ArrayMath+2
Solve→
Generate Random Point in a Circle
5%
MediumM
5%
MathGeometry+2
Solve→
Maximum Number of Points From Grid Queries
5%
HardH
5%
ArrayTwo Pointers+5
Solve→
Apply Operations to Maximize Score
5%
HardH
5%
ArrayMath+5
Solve→
Transpose File
5%
MediumM
5%
Shell
Solve→
Solving Questions With Brainpower
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Maximum Value of an Ordered Triplet I
5%
EasyE
5%
ArrayPrefix Sum
Solve→

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Remove Boxes
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Divide Array Into Equal Pairs
5%
EasyE
5%
ArrayHash Table+2
Solve→
Minimum Number of Operations to Make Elements in Array Distinct
5%
EasyE
5%
ArrayHash Table
Solve→
Maximum Odd Binary Number
5%
EasyE
5%
MathString+1
Solve→
Minimum Average Difference
5%
MediumM
5%
ArrayPrefix Sum
Solve→
Longest Palindrome After Substring Concatenation I
5%
MediumM
5%
Two PointersString+2
Solve→
Count Special Quadruplets
5%
EasyE
5%
ArrayHash Table+1
Solve→
Find Maximal Uncovered Ranges
5%
MediumM
5%
ArraySorting
Solve→
Count Nice Pairs in an Array
5%
MediumM
5%
ArrayHash Table+2
Solve→
Knight Dialer
5%
MediumM
5%
Dynamic Programming
Solve→
Count Complete Subarrays in an Array
5%
MediumM
5%
ArrayHash Table+1
Solve→
Count of Interesting Subarrays
5%
MediumM
5%
ArrayHash Table+1
Solve→
Minimum Cost to Cut a Stick
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Reverse Nodes in Even Length Groups
5%
MediumM
5%
Linked List
Solve→
Count Subarrays of Length Three With a Condition
5%
EasyE
5%
Array
Solve→
A Number After a Double Reversal
5%
EasyE
5%
Math
Solve→
Satisfiability of Equality Equations
5%
MediumM
5%
ArrayString+2
Solve→
Calculate Money in Leetcode Bank
5%
EasyE
5%
Math
Solve→
Maximum Number of Tasks You Can Assign
5%
HardH
5%
ArrayTwo Pointers+5
Solve→
Minimum Moves to Reach Target Score
5%
MediumM
5%
MathGreedy
Solve→
Minimum Number of Taps to Open to Water a Garden
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Remove Digit From Number to Maximize Result
5%
EasyE
5%
StringGreedy+1
Solve→
Longest Uncommon Subsequence I
5%
EasyE
5%
String
Solve→
Minimum Domino Rotations For Equal Row
5%
MediumM
5%
ArrayGreedy
Solve→
Longest Unequal Adjacent Groups Subsequence II
5%
MediumM
5%
ArrayString+1
Solve→

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Find Minimum Time to Reach Last Room I
5%
MediumM
5%
ArrayGraph Theory+3
Solve→
Longest Palindrome by Concatenating Two Letter Words
5%
MediumM
5%
ArrayHash Table+3
Solve→
Minimum Adjacent Swaps to Reach the Kth Smallest Number
5%
MediumM
5%
Two PointersString+1
Solve→
Total Distance Traveled
5%
EasyE
5%
MathSimulation
Solve→
Clone Binary Tree With Random Pointer
5%
MediumM
5%
Hash TableTree+3
Solve→
Using a Robot to Print the Lexicographically Smallest String
5%
MediumM
5%
Hash TableString+2
Solve→
Bitwise AND of Numbers Range
5%
MediumM
5%
Bit Manipulation
Solve→
Maximum Difference Between Even and Odd Frequency I
5%
EasyE
5%
Hash TableString+1
Solve→
Group the People Given the Group Size They Belong To
5%
MediumM
5%
ArrayHash Table+1
Solve→
Flip String to Monotone Increasing
5%
MediumM
5%
StringDynamic Programming
Solve→
Transform Array to All Equal Elements
5%
MediumM
5%
ArrayGreedy
Solve→
Max Difference You Can Get From Changing an Integer
5%
MediumM
5%
MathGreedy
Solve→
Divide Array Into Arrays With Max Difference
5%
MediumM
5%
ArrayGreedy+1
Solve→
Maximum Manhattan Distance After K Changes
5%
MediumM
5%
Hash TableMath+2
Solve→
Minimum Fuel Cost to Report to the Capital
5%
MediumM
5%
TreeDepth-First Search+2
Solve→
Reach End of Array With Max Score
5%
MediumM
5%
ArrayGreedy
Solve→
Find Duplicate Subtrees
5%
MediumM
5%
Hash TableTree+2
Solve→
Find Original Array From Doubled Array
5%
MediumM
5%
ArrayHash Table+2
Solve→
Find the Original Typed String II
5%
HardH
5%
StringDynamic Programming+1
Solve→
Fraction Addition and Subtraction
5%
MediumM
5%
MathString+3
Solve→
Ways to Express an Integer as Sum of Powers
5%
MediumM
5%
Dynamic Programming
Solve→
Prime Palindrome
5%
MediumM
5%
MathNumber Theory+1
Solve→
Paint Fence
5%
MediumM
5%
Dynamic Programming
Solve→
Count Odd Numbers in an Interval Range
5%
EasyE
5%
Math
Solve→
Reschedule Meetings for Maximum Free Time I
5%
MediumM
5%
ArrayGreedy+1
Solve→

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The Earliest and Latest Rounds Where Players Compete
5%
HardH
5%
Dynamic ProgrammingMemoization
Solve→
Construct Binary Tree from Inorder and Postorder Traversal
5%
MediumM
5%
ArrayHash Table+3
Solve→
Height of Binary Tree After Subtree Removal Queries
5%
HardH
5%
ArrayTree+3
Solve→
Smallest Range II
5%
MediumM
5%
ArrayMath+2
Solve→
Find the Maximum Length of Valid Subsequence I
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Find N Unique Integers Sum up to Zero
5%
EasyE
5%
ArrayMath
Solve→
Sort Items by Groups Respecting Dependencies
5%
HardH
5%
Depth-First SearchBreadth-First Search+3
Solve→
Super Pow
5%
MediumM
5%
MathDivide and Conquer+2
Solve→
Maximum Erasure Value
5%
MediumM
5%
ArrayHash Table+1
Solve→
Minimum Score After Removals on a Tree
5%
HardH
5%
ArrayBit Manipulation+2
Solve→
Maximum Score From Removing Substrings
5%
MediumM
5%
StringStack+1
Solve→
Complement of Base 10 Integer
5%
EasyE
5%
Bit Manipulation
Solve→
Palindrome Pairs
5%
HardH
5%
ArrayHash Table+3
Solve→
Smallest Subarrays With Maximum Bitwise OR
5%
MediumM
5%
ArrayBinary Search+2
Solve→
Minimum Addition to Make Integer Beautiful
5%
MediumM
5%
MathGreedy
Solve→
Bitwise ORs of Subarrays
5%
MediumM
5%
ArrayDynamic Programming+1
Solve→
Minimum Number of Operations to Make Array Empty
5%
MediumM
5%
ArrayHash Table+2
Solve→
Rearranging Fruits
5%
HardH
5%
ArrayHash Table+2
Solve→
Reach a Number
5%
MediumM
5%
MathBinary Search
Solve→
Complex Number Multiplication
5%
MediumM
5%
MathString+1
Solve→
Reordered Power of 2
5%
MediumM
5%
Hash TableMath+3
Solve→
Partition Array into Two Equal Product Subsets
5%
MediumM
5%
ArrayBit Manipulation+2
Solve→
Swap Sex of Employees
5%
EasyE
5%
Database
Solve→
Design Linked List
5%
MediumM
5%
Linked ListDesign
Solve→
Transformed Array
5%
EasyE
5%
ArraySimulation
Solve→

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Maximum Alternating Subsequence Sum
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Max Pair Sum in an Array
5%
EasyE
5%
ArrayHash Table
Solve→
Check if Two Chessboard Squares Have the Same Color
5%
EasyE
5%
MathString
Solve→
Non-decreasing Array
5%
MediumM
5%
Array
Solve→
Maximum Area of Longest Diagonal Rectangle
5%
EasyE
5%
Array
Solve→
Reformat Department Table
5%
EasyE
5%
Database
Solve→
Sort Matrix by Diagonals
5%
MediumM
5%
ArraySorting+1
Solve→
Reorder Data in Log Files
5%
MediumM
5%
ArrayString+1
Solve→
Find the Number of Ways to Place People I
5%
MediumM
5%
ArrayMath+3
Solve→
Find the Number of Ways to Place People II
5%
HardH
5%
ArrayMath+3
Solve→
Find Closest Person
5%
EasyE
5%
Math
Solve→
3Sum With Multiplicity
5%
MediumM
5%
ArrayHash Table+3
Solve→
Cherry Pickup
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Vowels Game in a String
5%
MediumM
5%
MathString+2
Solve→
Grid Teleportation Traversal
5%
MediumM
5%
ArrayHash Table+2
Solve→
Additive Number
5%
MediumM
5%
StringBacktracking
Solve→
Decode the Message
5%
EasyE
5%
Hash TableString
Solve→
Perfect Rectangle
5%
HardH
5%
ArrayHash Table+3
Solve→
Water Bottles II
5%
MediumM
5%
MathSimulation
Solve→
Loud and Rich
5%
MediumM
5%
ArrayDepth-First Search+3
Solve→
Zigzag Grid Traversal With Skip
5%
EasyE
5%
ArrayMatrix+1
Solve→
Count the Number of Infection Sequences
5%
HardH
5%
ArrayMath+2
Solve→
Compute Decimal Representation
5%
EasyE
5%
ArrayMath
Solve→
Can I Win
5%
MediumM
5%
MathDynamic Programming+4
Solve→
Number of Pairs Satisfying Inequality
5%
HardH
5%
ArrayBinary Search+5
Solve→

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Find Sum of Array Product of Magical Sequences
5%
HardH
5%
ArrayMath+4
Solve→
Lowest Common Ancestor of a Binary Tree IV
5%
MediumM
5%
Hash TableTree+4
Solve→
Minimum Difference Between Highest and Lowest of K Scores
5%
EasyE
5%
ArraySliding Window+1
Solve→
Eliminate Maximum Number of Monsters
5%
MediumM
5%
ArrayGreedy+1
Solve→
Design an Ordered Stream
5%
EasyE
5%
ArrayHash Table+2
Solve→
Maximum Frequency of an Element After Performing Operations I
5%
MediumM
5%
ArrayBinary Search+3
Solve→
Next Greater Numerically Balanced Number
5%
MediumM
5%
Hash TableMath+3
Solve→
Length of the Longest Valid Substring
5%
HardH
5%
ArrayHash Table+2
Solve→
Count Number of Rectangles Containing Each Point
5%
MediumM
5%
ArrayHash Table+3
Solve→
Number of Days Between Two Dates
5%
EasyE
5%
MathString
Solve→
Design a Text Editor
5%
HardH
5%
Linked ListString+4
Solve→
Find Missing Observations
5%
MediumM
5%
ArrayMath+1
Solve→
Minimum Operations to Convert All Elements to Zero
5%
MediumM
5%
ArrayHash Table+3
Solve→
Increment Submatrices by One
5%
MediumM
5%
ArrayMatrix+1
Solve→
Check If All 1's Are at Least Length K Places Away
5%
EasyE
5%
Array
Solve→
The K Weakest Rows in a Matrix
5%
EasyE
5%
ArrayBinary Search+3
Solve→
Keep Multiplying Found Values by Two
5%
EasyE
5%
ArrayHash Table+2
Solve→
3Sum Smaller
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Set Intersection Size At Least Two
5%
HardH
5%
ArrayGreedy+1
Solve→
Maximum Binary Tree
5%
MediumM
5%
ArrayDivide and Conquer+5
Solve→
Shortest Distance in a Plane
5%
MediumM
5%
DatabaseNearest Pair of Points
Solve→
Smallest Integer Divisible by K
5%
MediumM
5%
Hash TableMath+1
Solve→
Minimum Length of String After Deleting Similar Ends
5%
MediumM
5%
Two PointersString
Solve→
Capital Gain/Loss
5%
MediumM
5%
Database
Solve→
Count Number of Trapezoids I
5%
MediumM
5%
ArrayHash Table+2
Solve→

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Minimum Operations to Make Array Elements Zero
5%
HardH
5%
ArrayMath+1
Solve→
Count the Number of Computer Unlocking Permutations
5%
MediumM
5%
ArrayMath+2
Solve→
Jump Game VI
5%
MediumM
5%
ArrayDynamic Programming+3
Solve→
Two Best Non-Overlapping Events
5%
MediumM
5%
ArrayBinary Search+3
Solve→
Maximum Product of Three Elements After One Replacement
5%
MediumM
5%
ArrayMath+2
Solve→
Split and Merge Array Transformation
5%
MediumM
5%
ArrayHash Table+1
Solve→
Rearrange Products Table
5%
EasyE
5%
Database
Solve→
Maximum Profit from Trading Stocks with Discounts
5%
HardH
5%
ArrayDynamic Programming+2
Solve→
Binary Tree Tilt
5%
EasyE
5%
TreeDepth-First Search+2
Solve→
N-Repeated Element in Size 2N Array
5%
EasyE
5%
ArrayHash Table+1
Solve→
Number of Ways to Paint N × 3 Grid
5%
HardH
5%
Dynamic ProgrammingGraph Coloring
Solve→
Parallel Courses
5%
MediumM
5%
Graph TheoryTopological Sort+1
Solve→
Employee Free Time
5%
HardH
5%
ArraySweep Line+2
Solve→
Minimum ASCII Delete Sum for Two Strings
5%
MediumM
5%
StringDynamic Programming+1
Solve→
Super Ugly Number
5%
MediumM
5%
ArrayMath+1
Solve→
Maximize Area of Square Hole in Grid
5%
MediumM
5%
ArraySorting
Solve→
Construct the Minimum Bitwise Array II
5%
MediumM
5%
ArrayBit Manipulation
Solve→
Minimum Number of Seconds to Make Mountain Height Zero
5%
MediumM
5%
ArrayMath+3
Solve→
Divide an Array Into Subarrays With Minimum Cost I
5%
EasyE
5%
ArraySorting+1
Solve→
Trionic Array I
5%
EasyE
5%
Array
Solve→
Longest Mountain in Array
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Matrix Similarity After Cyclic Shifts
5%
EasyE
5%
ArrayMath+2
Solve→
Champagne Tower
5%
MediumM
5%
Dynamic Programming
Solve→
Largest Prime from Consecutive Prime Sum
5%
MediumM
5%
ArrayMath+1
Solve→
Reshape Data: Pivot
5%
EasyE
5%
Solve→

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Distinct Prime Factors of Product of Array
5%
MediumM
5%
ArrayHash Table+8
Solve→
Prime Subtraction Operation
5%
MediumM
5%
ArrayMath+3
Solve→
Matrix Diagonal Sum
5%
EasyE
5%
ArrayMatrix
Solve→
Lexicographically Smallest String After Deleting Duplicate Characters
5%
HardH
5%
Hash TableString+3
Solve→
Maximum Ascending Subarray Sum
5%
EasyE
5%
Array
Solve→
Ways to Make a Fair Array
5%
MediumM
5%
ArrayPrefix Sum
Solve→
Sum of Distances in Tree
5%
HardH
5%
Dynamic ProgrammingTree+3
Solve→
Number of Adjacent Elements With the Same Color
5%
MediumM
5%
Array
Solve→
Sort Transformed Array
5%
MediumM
5%
ArrayMath+2
Solve→
Count Triplets That Can Form Two Arrays of Equal XOR
5%
MediumM
5%
ArrayHash Table+3
Solve→
Lexicographically Smallest Palindrome
5%
EasyE
5%
Two PointersString+1
Solve→
Largest Submatrix With Rearrangements
5%
MediumM
5%
ArrayGreedy+2
Solve→
Distribute Coins in Binary Tree
5%
MediumM
5%
TreeDepth-First Search+2
Solve→
Flip Square Submatrix Vertically
5%
EasyE
5%
ArrayTwo Pointers+1
Solve→
Sort Array By Parity II
5%
EasyE
5%
ArrayTwo Pointers+1
Solve→
The Latest Time to Catch a Bus
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Largest 3-Same-Digit Number in String
5%
EasyE
5%
String
Solve→
Find All Possible Stable Binary Arrays I
5%
MediumM
5%
Dynamic ProgrammingPrefix Sum
Solve→
Clumsy Factorial
5%
MediumM
5%
MathStack+1
Solve→
Inverse Coin Change
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Type of Triangle
5%
EasyE
5%
ArrayMath+2
Solve→
Robot Collisions
5%
HardH
5%
ArrayStack+2
Solve→
Minimum Falling Path Sum II
5%
HardH
5%
ArrayDynamic Programming+1
Solve→
Course Schedule III
5%
HardH
5%
ArrayGreedy+2
Solve→
Buddy Strings
5%
EasyE
5%
Hash TableString
Solve→

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The kth Factor of n
5%
MediumM
5%
MathNumber Theory+1
Solve→
Sum of Distances
5%
MediumM
5%
ArrayHash Table+1
Solve→
Minimum Number of Swaps to Make the String Balanced
5%
MediumM
5%
Two PointersString+3
Solve→
Split the Array
5%
EasyE
5%
ArrayHash Table+1
Solve→
Detect Cycles in 2D Grid
5%
MediumM
5%
ArrayDepth-First Search+3
Solve→
Rotate Function
5%
MediumM
5%
ArrayMath+1
Solve→
Intersection of Multiple Arrays
5%
EasyE
5%
ArrayHash Table+2
Solve→
Total Characters in String After Transformations I
5%
MediumM
5%
Hash TableMath+3
Solve→
Minimum Value to Get Positive Step by Step Sum
5%
EasyE
5%
ArrayPrefix Sum
Solve→
Minimum Jumps to Reach End via Prime Teleportation
5%
MediumM
5%
ArrayHash Table+3
Solve→
Coupon Code Validator
5%
EasyE
5%
ArrayHash Table+2
Solve→
Maximum Number of Jumps to Reach the Last Index
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Count Good Triplets
5%
EasyE
5%
ArrayEnumeration
Solve→
Count K-th Roots in a Range
5%
MediumM
5%
MathBinary Search
Solve→
Smallest Even Multiple
5%
EasyE
5%
MathNumber Theory
Solve→
Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree
5%
HardH
5%
Union-FindGraph Theory+6
Solve→
K Items With the Maximum Sum
5%
EasyE
5%
MathGreedy
Solve→
Earliest Finish Time for Land and Water Rides I
5%
EasyE
5%
ArrayTwo Pointers+3
Solve→
Smallest Subsequence of Distinct Characters
5%
MediumM
5%
StringStack+2
Solve→
Partition Array According to Given Pivot
5%
MediumM
5%
ArrayTwo Pointers+1
Solve→
Bag of Tokens
5%
MediumM
5%
ArrayTwo Pointers+2
Solve→
Matrix Block Sum
5%
MediumM
5%
ArrayMatrix+1
Solve→
Maximum Non Negative Product in a Matrix
5%
MediumM
5%
ArrayDynamic Programming+1
Solve→
Minimum Penalty for a Shop
5%
MediumM
5%
StringPrefix Sum
Solve→
Find Target Indices After Sorting Array
5%
EasyE
5%
ArrayBinary Search+1
Solve→

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Process String with Special Operations II
5%
HardH
5%
StringSimulation
Solve→
Day of the Year
5%
EasyE
5%
MathString
Solve→
Count Vowel Strings in Ranges
5%
MediumM
5%
ArrayString+1
Solve→
Create Target Array in the Given Order
5%
EasyE
5%
ArraySimulation
Solve→
Maximum Number of Balloons
5%
EasyE
5%
Hash TableString+1
Solve→
Maximum Beauty of an Array After Applying Operation
5%
MediumM
5%
ArrayBinary Search+2
Solve→
Max Increase to Keep City Skyline
5%
MediumM
5%
ArrayGreedy+1
Solve→
Number of ZigZag Arrays I
5%
HardH
5%
Dynamic ProgrammingPrefix Sum
Solve→
Strong Password Checker
5%
HardH
5%
StringGreedy+1
Solve→
Find a Safe Walk Through a Grid
5%
MediumM
5%
ArrayBreadth-First Search+4
Solve→
Second Largest Digit in a String
5%
EasyE
5%
Hash TableString
Solve→
Remove Comments
5%
MediumM
5%
ArrayString
Solve→
Remove Covered Intervals
5%
MediumM
5%
ArraySorting
Solve→
Frequency Balance Subarray
5%
MediumM
5%
Solve→
Number of Enclaves
5%
MediumM
5%
ArrayDepth-First Search+3
Solve→
Path Existence Queries in a Graph II
5%
HardH
5%
ArrayTwo Pointers+6
Solve→
Minimum Number of Moves to Seat Everyone
5%
EasyE
5%
ArrayGreedy+2
Solve→
Count the Number of Complete Components
5%
MediumM
5%
Depth-First SearchBreadth-First Search+2
Solve→
Next Greater Element IV
5%
HardH
5%
ArrayBinary Search+4
Solve→
Special Array With X Elements Greater Than or Equal X
5%
EasyE
5%
ArrayBinary Search+1
Solve→
Concatenate Non-Zero Digits and Multiply by Sum I
5%
EasyE
5%
Math
Solve→
Restore Finishing Order
5%
EasyE
5%
ArrayHash Table
Solve→
Critical Connections in a Network
5%
HardH
5%
Depth-First SearchGraph Theory+2
Solve→
Limit Occurrences in Sorted Array
5%
EasyE
5%
ArrayTwo Pointers
Solve→
Maximum Value at a Given Index in a Bounded Array
5%
MediumM
5%
MathBinary Search+1
Solve→

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Minimized Maximum of Products Distributed to Any Store
5%
MediumM
5%
ArrayBinary Search+1
Solve→
Sliding Subarray Beauty
5%
MediumM
5%
ArrayHash Table+1
Solve→
Number of Different Subsequences GCDs
5%
HardH
5%
ArrayMath+4
Solve→
Calculate Special Bonus
5%
EasyE
5%
Database
Solve→
Number of Unique XOR Triplets I
5%
MediumM
5%
ArrayMath+1
Solve→
Number of Even and Odd Bits
5%
EasyE
5%
Bit Manipulation
Solve→
Maximum Subarray Sum with One Deletion
5%
MediumM
5%
ArrayDynamic Programming
Solve→
Maximum Product of Two Digits
5%
EasyE
5%
MathSorting
Solve→
Integer Replacement
5%
MediumM
5%
Dynamic ProgrammingGreedy+2
Solve→
Biggest Single Number
5%
EasyE
5%
Database
Solve→
Smallest Palindromic Rearrangement II
5%
HardH
5%
Hash TableMath+3
Solve→
Minimum Number of K Consecutive Bit Flips
5%
HardH
5%
ArrayBit Manipulation+4
Solve→
Truncate Sentence
5%
EasyE
5%
ArrayString
Solve→
Number of Changing Keys
5%
EasyE
5%
String
Solve→
Find the Winner of the Circular Game
5%
MediumM
5%
ArrayMath+3
Solve→
Find the Kth Largest Integer in the Array
5%
MediumM
5%
ArrayString+4
Solve→
Patients With a Condition
5%
EasyE
5%
Database
Solve→
Minimum Cost Path with Alternating Directions III
5%
HardH
5%
Solve→
Count Beautiful Numbers
5%
HardH
5%
Dynamic Programming
Solve→
Smallest Divisible Digit Product II
5%
HardH
5%
MathString+3
Solve→
Sum Multiples
5%
EasyE
5%
Math
Solve→
Height Checker
5%
EasyE
5%
ArraySorting+2
Solve→
Count Subarrays With K Distinct Integers
5%
HardH
5%
ArrayHash Table+2
Solve→
Minimum Number of Coins to be Added
5%
MediumM
5%
ArrayGreedy+1
Solve→

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Frequently Asked Questions

What LeetCode problems are tagged to Meta?

Our current Meta practice dataset contains 1399 tagged coding problems, including Minimum Remove to Make Valid Parentheses, Valid Word Abbreviation, Valid Palindrome II. The difficulty breakdown is 427 Easy, 763 Medium, and 209 Hard problems.

How should I prepare for a Meta coding interview?

Focus on the most frequently asked problems first, especially those with high frequency scores. Meta interviews typically emphasize Array and String. Practice explaining your thought process while coding.

What is the difficulty level of Meta coding interviews?

Based on our data, Meta interviews include 427 Easy (31%), 763 Medium (55%), and 209 Hard (15%) problems.

Ready to ace your Meta interview?

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