TikTok LeetCode Interview Questions
Practice 348 coding problems currently tagged to TikTok. Use the frequency and topic signals to build a focused software engineering interview practice plan.
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34 Easy
243 Medium
71 Hard
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TikTok LeetCode Interview Questions
| Problem | DifficultyDiff | Action |
|---|---|---|
LRU Cache 100% | MediumM | Solve→ |
Number of Islands 97.3% | MediumM | Solve→ |
Longest Increasing Subsequence 89.7% | MediumM | Solve→ |
Longest Substring Without Repeating Characters 87.2% | MediumM | Solve→ |
Number of Distinct Islands 86.6% | MediumM | Solve→ |
Course Schedule II 85.9% | MediumM | Solve→ |
Meeting Rooms II 83.8% | MediumM | Solve→ |
Trapping Rain Water 83% | HardH | Solve→ |
Merge Intervals 83% | MediumM | Solve→ |
Course Schedule 82.3% | MediumM | Solve→ |
Text Justification 79.7% | HardH | Solve→ |
Decode String 75.8% | MediumM | Solve→ |
Longest Palindromic Substring 74.7% | MediumM | Solve→ |
Search in Rotated Sorted Array 74.7% | MediumM | Solve→ |
Minimum Window Substring 74.7% | HardH | Solve→ |
Word Search 74.7% | MediumM | Solve→ |
N-Queens 73.6% | HardH | Solve→ |
3Sum 72.4% | MediumM | Solve→ |
Spiral Matrix 71.1% | MediumM | Solve→ |
Coin Change 71.1% | MediumM | Solve→ |
Subarray Sum Equals K 71.1% | MediumM | Solve→ |
Minimum Swaps to Group All 1's Together 71.1% | MediumM | Solve→ |
Longest Consecutive Sequence 69.8% | MediumM | Solve→ |
Top K Frequent Elements 69.8% | MediumM | Solve→ |
Subarray With Elements Greater Than Varying Threshold 69.8% | HardH | Solve→ |
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Merge k Sorted Lists 68.3% | HardH | Solve→ |
Maximum Swap 68.3% | MediumM | Solve→ |
Making A Large Island 68.3% | HardH | Solve→ |
Valid Parentheses 66.8% | EasyE | Solve→ |
Sqrt(x) 66.8% | EasyE | Solve→ |
House Robber 66.8% | MediumM | Solve→ |
Basic Calculator III 66.8% | HardH | Solve→ |
Longest Happy String 66.8% | MediumM | Solve→ |
Maximum Value at a Given Index in a Bounded Array 66.8% | MediumM | Solve→ |
Snapshot Array 66.8% | MediumM | Solve→ |
Two Sum 65.2% | EasyE | Solve→ |
Best Time to Buy and Sell Stock 65.2% | EasyE | Solve→ |
Basic Calculator II 65.2% | MediumM | Solve→ |
Word Ladder 63.4% | HardH | Solve→ |
Kth Largest Element in an Array 63.4% | MediumM | Solve→ |
Longest Increasing Path in a Matrix 63.4% | HardH | Solve→ |
Insert Delete GetRandom O(1) 63.4% | MediumM | Solve→ |
Valid Parenthesis String 63.4% | MediumM | Solve→ |
Generate Parentheses 61.4% | MediumM | Solve→ |
Sort Colors 61.4% | MediumM | Solve→ |
Find Median from Data Stream 61.4% | HardH | Solve→ |
Add Strings 61.4% | EasyE | Solve→ |
Meeting Rooms III 61.4% | HardH | Solve→ |
Daily Temperatures 61.4% | MediumM | Solve→ |
Design HashMap 61.4% | EasyE | Solve→ |
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Word Search II 61.4% | HardH | Solve→ |
Edit Distance 59.3% | MediumM | Solve→ |
Construct Binary Tree from Preorder and Inorder Traversal 59.3% | MediumM | Solve→ |
Binary Tree Maximum Path Sum 59.3% | HardH | Solve→ |
Word Break II 59.3% | HardH | Solve→ |
Reorder List 59.3% | MediumM | Solve→ |
Count the Hidden Sequences 59.3% | MediumM | Solve→ |
Serialize and Deserialize Binary Tree 59.3% | HardH | Solve→ |
Max Area of Island 59.3% | MediumM | Solve→ |
Minimum Operations to Make Character Frequencies Equal 59.3% | HardH | Solve→ |
Minimum Cost Good Caption 59.3% | HardH | Solve→ |
Lexicographically Smallest Generated String 59.3% | HardH | Solve→ |
Find First and Last Position of Element in Sorted Array 57% | MediumM | Solve→ |
Simplify Path 57% | MediumM | Solve→ |
Binary Tree Right Side View 57% | MediumM | Solve→ |
Reverse Linked List 57% | EasyE | Solve→ |
Basic Calculator 57% | HardH | Solve→ |
Subarray Sums Divisible by K 57% | MediumM | Solve→ |
Container With Most Water 54.4% | MediumM | Solve→ |
Combination Sum 54.4% | MediumM | Solve→ |
Jump Game 54.4% | MediumM | Solve→ |
Climbing Stairs 54.4% | EasyE | Solve→ |
Word Break 54.4% | MediumM | Solve→ |
Find Peak Element 54.4% | MediumM | Solve→ |
Remove Duplicate Letters 54.4% | MediumM | Solve→ |
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Pacific Atlantic Water Flow 54.4% | MediumM | Solve→ |
Length of the Longest Alphabetical Continuous Substring 54.4% | MediumM | Solve→ |
Most Popular Video Creator 54.4% | MediumM | Solve→ |
Closest Prime Numbers in Range 54.4% | MediumM | Solve→ |
Find the Score of All Prefixes of an Array 54.4% | MediumM | Solve→ |
Count Complete Subarrays in an Array 54.4% | MediumM | Solve→ |
Bus Routes 54.4% | HardH | Solve→ |
Possible Bipartition 54.4% | MediumM | Solve→ |
Rotting Oranges 54.4% | MediumM | Solve→ |
Minimum Moves to Pick K Ones 54.4% | HardH | Solve→ |
Shortest Path in a Grid with Obstacles Elimination 54.4% | HardH | Solve→ |
Incremental Memory Leak 54.4% | MediumM | Solve→ |
Shortest Bridge 54.4% | MediumM | Solve→ |
Design Add and Search Words Data Structure 54.4% | MediumM | Solve→ |
Regular Expression Matching 51.4% | HardH | Solve→ |
Reverse Nodes in k-Group 51.4% | HardH | Solve→ |
Permutations 51.4% | MediumM | Solve→ |
Group Anagrams 51.4% | MediumM | Solve→ |
Compare Version Numbers 51.4% | MediumM | Solve→ |
Minimum Size Subarray Sum 51.4% | MediumM | Solve→ |
Lowest Common Ancestor of a Binary Tree 51.4% | MediumM | Solve→ |
Sliding Window Maximum 51.4% | HardH | Solve→ |
Meeting Rooms 51.4% | EasyE | Solve→ |
Alien Dictionary 51.4% | HardH | Solve→ |
Longest Substring with At Least K Repeating Characters 51.4% | MediumM | Solve→ |
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Evaluate Division 51.4% | MediumM | Solve→ |
Koko Eating Bananas 51.4% | MediumM | Solve→ |
Random Pick with Weight 51.4% | MediumM | Solve→ |
Gas Station 51.4% | MediumM | Solve→ |
Greatest Common Divisor of Strings 51.4% | EasyE | Solve→ |
Brightest Position on Street 51.4% | MediumM | Solve→ |
Longest Common Prefix 48% | EasyE | Solve→ |
Longest Valid Parentheses 48% | HardH | Solve→ |
Multiply Strings 48% | MediumM | Solve→ |
Jump Game II 48% | MediumM | Solve→ |
Maximum Subarray 48% | MediumM | Solve→ |
Subsets 48% | MediumM | Solve→ |
Restore IP Addresses 48% | MediumM | Solve→ |
Best Time to Buy and Sell Stock II 48% | MediumM | Solve→ |
Find Minimum in Rotated Sorted Array 48% | MediumM | Solve→ |
Rotate Array 48% | MediumM | Solve→ |
Longest Substring with At Most K Distinct Characters 48% | MediumM | Solve→ |
Partition Equal Subset Sum 48% | MediumM | Solve→ |
Design In-Memory File System 48% | HardH | Solve→ |
Capacity To Ship Packages Within D Days 48% | MediumM | Solve→ |
Minimum Remove to Make Valid Parentheses 48% | MediumM | Solve→ |
Kth Missing Positive Number 48% | EasyE | Solve→ |
Matchsticks to Square 48% | MediumM | Solve→ |
Water and Jug Problem 48% | MediumM | Solve→ |
Super Egg Drop 48% | HardH | Solve→ |
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Longest Mountain in Array 48% | MediumM | Solve→ |
Next Permutation 44% | MediumM | Solve→ |
Permutations II 44% | MediumM | Solve→ |
Minimum Path Sum 44% | MediumM | Solve→ |
Move Zeroes 44% | EasyE | Solve→ |
Remove Invalid Parentheses 44% | HardH | Solve→ |
Frog Jump 44% | HardH | Solve→ |
Split Message Based on Limit 44% | HardH | Solve→ |
Asteroid Collision 44% | MediumM | Solve→ |
Reorganize String 44% | MediumM | Solve→ |
Remove All Adjacent Duplicates in String II 44% | MediumM | Solve→ |
Find All Duplicates in an Array 44% | MediumM | Solve→ |
Min Cost to Connect All Points 44% | MediumM | Solve→ |
Reorder Routes to Make All Paths Lead to the City Zero 44% | MediumM | Solve→ |
Numbers At Most N Given Digit Set 44% | HardH | Solve→ |
Binary Tree Longest Consecutive Sequence 44% | MediumM | Solve→ |
Count Number of Nice Subarrays 44% | MediumM | Solve→ |
Largest Rectangle in Histogram 44% | HardH | Solve→ |
Shortest Unsorted Continuous Subarray 44% | MediumM | Solve→ |
Minimum Operations to Write the Letter Y on a Grid 44% | MediumM | Solve→ |
Course Schedule IV 44% | MediumM | Solve→ |
Cheapest Flights Within K Stops 44% | MediumM | Solve→ |
All O`one Data Structure 44% | HardH | Solve→ |
Swap Nodes in Pairs 39.1% | MediumM | Solve→ |
Binary Tree Zigzag Level Order Traversal 39.1% | MediumM | Solve→ |
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Best Time to Buy and Sell Stock III 39.1% | HardH | Solve→ |
Longest Substring with At Most Two Distinct Characters 39.1% | MediumM | Solve→ |
Find All Possible Recipes from Given Supplies 39.1% | MediumM | Solve→ |
Best Time to Buy and Sell Stock IV 39.1% | HardH | Solve→ |
House Robber II 39.1% | MediumM | Solve→ |
Maximal Square 39.1% | MediumM | Solve→ |
Design Tic-Tac-Toe 39.1% | MediumM | Solve→ |
Search a 2D Matrix 39.1% | MediumM | Solve→ |
Kth Smallest Element in a Sorted Matrix 39.1% | MediumM | Solve→ |
Remove K Digits 39.1% | MediumM | Solve→ |
Merge Operations to Turn Array Into a Palindrome 39.1% | MediumM | Solve→ |
Design Search Autocomplete System 39.1% | HardH | Solve→ |
Open the Lock 39.1% | MediumM | Solve→ |
Convert Binary Search Tree to Sorted Doubly Linked List 39.1% | MediumM | Solve→ |
Max Consecutive Ones III 39.1% | MediumM | Solve→ |
Shortest Path in Binary Matrix 39.1% | MediumM | Solve→ |
Longest Common Subsequence 39.1% | MediumM | Solve→ |
Number of Visible People in a Queue 39.1% | HardH | Solve→ |
Number of Good Leaf Nodes Pairs 39.1% | MediumM | Solve→ |
Find the Length of the Longest Common Prefix 39.1% | MediumM | Solve→ |
Tree Diameter 39.1% | MediumM | Solve→ |
Maximum Product of Three Numbers 39.1% | EasyE | Solve→ |
Snakes and Ladders 39.1% | MediumM | Solve→ |
2 Keys Keyboard 39.1% | MediumM | Solve→ |
Sentence Similarity III 39.1% | MediumM | Solve→ |
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Unique Paths II 39.1% | MediumM | Solve→ |
Make Costs of Paths Equal in a Binary Tree 39.1% | MediumM | Solve→ |
Minimum Cost For Tickets 39.1% | MediumM | Solve→ |
Regions Cut By Slashes 39.1% | MediumM | Solve→ |
Design Memory Allocator 39.1% | MediumM | Solve→ |
Robot Room Cleaner 39.1% | HardH | Solve→ |
Path Sum III 39.1% | MediumM | Solve→ |
Median of Two Sorted Arrays 33% | HardH | Solve→ |
Merge Two Sorted Lists 33% | EasyE | Solve→ |
Combination Sum II 33% | MediumM | Solve→ |
Remove Duplicates from Sorted Array II 33% | MediumM | Solve→ |
Reverse Linked List II 33% | MediumM | Solve→ |
Path Sum II 33% | MediumM | Solve→ |
Valid Palindrome 33% | EasyE | Solve→ |
Sort List 33% | MediumM | Solve→ |
Reverse Words in a String 33% | MediumM | Solve→ |
Maximum Product Subarray 33% | MediumM | Solve→ |
Intersection of Two Linked Lists 33% | EasyE | Solve→ |
Step-By-Step Directions From a Binary Tree Node to Another 33% | MediumM | Solve→ |
Largest Number 33% | MediumM | Solve→ |
Walls and Gates 33% | MediumM | Solve→ |
Shortest Distance from All Buildings 33% | HardH | Solve→ |
Insert Delete GetRandom O(1) - Duplicates allowed 33% | HardH | Solve→ |
Non-overlapping Intervals 33% | MediumM | Solve→ |
String Compression 33% | MediumM | Solve→ |
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LFU Cache 33% | HardH | Solve→ |
Coin Change II 33% | MediumM | Solve→ |
Contiguous Array 33% | MediumM | Solve→ |
Task Scheduler 33% | MediumM | Solve→ |
Maximum Width of Binary Tree 33% | MediumM | Solve→ |
Valid Palindrome II 33% | EasyE | Solve→ |
Best Time to Buy and Sell Stock with Transaction Fee 33% | MediumM | Solve→ |
Number of Atoms 33% | HardH | Solve→ |
Is Graph Bipartite? 33% | MediumM | Solve→ |
Champagne Tower 33% | MediumM | Solve→ |
Score of Parentheses 33% | MediumM | Solve→ |
Sum of Subarray Minimums 33% | MediumM | Solve→ |
Minimize Malware Spread 33% | HardH | Solve→ |
Minimum Increment to Make Array Unique 33% | MediumM | Solve→ |
Pairs of Songs With Total Durations Divisible by 60 33% | MediumM | Solve→ |
Search Suggestions System 33% | MediumM | Solve→ |
Minimum Difficulty of a Job Schedule 33% | HardH | Solve→ |
Maximum Points You Can Obtain from Cards 33% | MediumM | Solve→ |
Minimum Moves to Spread Stones Over Grid 33% | MediumM | Solve→ |
Combinations 33% | MediumM | Solve→ |
My Calendar I 33% | MediumM | Solve→ |
Number of Connected Components in an Undirected Graph 33% | MediumM | Solve→ |
Permutation in String 33% | MediumM | Solve→ |
Replace Words 33% | MediumM | Solve→ |
Candy 33% | HardH | Solve→ |
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Delete and Earn 33% | MediumM | Solve→ |
Max Stack 33% | HardH | Solve→ |
House Robber III 33% | MediumM | Solve→ |
Time Based Key-Value Store 33% | MediumM | Solve→ |
Diameter of Binary Tree 33% | EasyE | Solve→ |
Maximum Width Ramp 33% | MediumM | Solve→ |
Find the Duplicate Number 33% | MediumM | Solve→ |
All Nodes Distance K in Binary Tree 33% | MediumM | Solve→ |
Best Time to Buy and Sell Stock with Cooldown 33% | MediumM | Solve→ |
Letter Case Permutation 33% | MediumM | Solve→ |
Minimum Number of Arrows to Burst Balloons 33% | MediumM | Solve→ |
Add Bold Tag in String 33% | MediumM | Solve→ |
Longest Duplicate Substring 33% | HardH | Solve→ |
Roman to Integer 33% | EasyE | Solve→ |
Deepest Leaves Sum 33% | MediumM | Solve→ |
Flatten Deeply Nested Array 33% | MediumM | Solve→ |
Merge In Between Linked Lists 33% | MediumM | Solve→ |
Accounts Merge 33% | MediumM | Solve→ |
Find All Anagrams in a String 33% | MediumM | Solve→ |
Product of the Last K Numbers 33% | MediumM | Solve→ |
Fruit Into Baskets 33% | MediumM | Solve→ |
Rotate Image 33% | MediumM | Solve→ |
Serialize and Deserialize N-ary Tree 33% | HardH | Solve→ |
Partition Array for Maximum Sum 33% | MediumM | Solve→ |
Add Two Numbers 24.6% | MediumM | Solve→ |
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Integer to Roman 24.6% | MediumM | Solve→ |
Valid Sudoku 24.6% | MediumM | Solve→ |
Pow(x, n) 24.6% | MediumM | Solve→ |
Spiral Matrix II 24.6% | MediumM | Solve→ |
Insert Interval 24.6% | MediumM | Solve→ |
Unique Paths 24.6% | MediumM | Solve→ |
Plus One 24.6% | EasyE | Solve→ |
Unique Binary Search Trees 24.6% | MediumM | Solve→ |
Path Sum 24.6% | EasyE | Solve→ |
Parallel Courses III 24.6% | HardH | Solve→ |
Happy Number 24.6% | EasyE | Solve→ |
Implement Trie (Prefix Tree) 24.6% | MediumM | Solve→ |
Search a 2D Matrix II 24.6% | MediumM | Solve→ |
3Sum Smaller 24.6% | MediumM | Solve→ |
Graph Valid Tree 24.6% | MediumM | Solve→ |
Expression Add Operators 24.6% | HardH | Solve→ |
Rearrange String k Distance Apart 24.6% | HardH | Solve→ |
Add Two Numbers II 24.6% | MediumM | Solve→ |
Validate IP Address 24.6% | MediumM | Solve→ |
Heaters 24.6% | MediumM | Solve→ |
Diagonal Traverse 24.6% | MediumM | Solve→ |
Count Pairs Of Similar Strings 24.6% | EasyE | Solve→ |
Find K Closest Elements 24.6% | MediumM | Solve→ |
Number of Longest Increasing Subsequence 24.6% | MediumM | Solve→ |
Stickers to Spell Word 24.6% | HardH | Solve→ |
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Subarrays with K Different Integers 24.6% | HardH | Solve→ |
Dot Product of Two Sparse Vectors 24.6% | MediumM | Solve→ |
Furthest Building You Can Reach 24.6% | MediumM | Solve→ |
Remove Nth Node From End of List 24.6% | MediumM | Solve→ |
Concatenated Words 24.6% | HardH | Solve→ |
Minimum Swaps to Group All 1's Together II 24.6% | MediumM | Solve→ |
Valid Word Abbreviation 24.6% | EasyE | Solve→ |
Combination Sum IV 24.6% | MediumM | Solve→ |
Maximal Score After Applying K Operations 24.6% | MediumM | Solve→ |
Find the Celebrity 24.6% | MediumM | Solve→ |
Insert into a Sorted Circular Linked List 24.6% | MediumM | Solve→ |
Minimum Number of Operations to Move All Balls to Each Box 24.6% | MediumM | Solve→ |
Copy List with Random Pointer 24.6% | MediumM | Solve→ |
The Maze II 24.6% | MediumM | Solve→ |
Valid Palindrome III 24.6% | HardH | Solve→ |
Arithmetic Slices 24.6% | MediumM | Solve→ |
Find Positive Integer Solution for a Given Equation 24.6% | MediumM | Solve→ |
Maximum Spending After Buying Items 24.6% | HardH | Solve→ |
K-th Smallest in Lexicographical Order 24.6% | HardH | Solve→ |
Rearranging Fruits 24.6% | HardH | Solve→ |
Parallel Courses 24.6% | MediumM | Solve→ |
Convert Sorted Array to Binary Search Tree 24.6% | EasyE | Solve→ |
Maximum Performance of a Team 24.6% | HardH | Solve→ |
Two Sum II - Input Array Is Sorted 24.6% | MediumM | Solve→ |
Maximum Profit in Job Scheduling 24.6% | HardH | Solve→ |
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Kth Smallest Element in a BST 24.6% | MediumM | Solve→ |
Add Two Integers 24.6% | EasyE | Solve→ |
Put Marbles in Bags 24.6% | HardH | Solve→ |
Remove Duplicates from Sorted List II 24.6% | MediumM | Solve→ |
Valid Mountain Array 24.6% | EasyE | Solve→ |
Human Traffic of Stadium 24.6% | HardH | Solve→ |
Sparse Matrix Multiplication 24.6% | MediumM | Solve→ |
Event Emitter 24.6% | MediumM | Solve→ |
Minesweeper 24.6% | MediumM | Solve→ |
Valid Square 24.6% | MediumM | Solve→ |
Symmetric Tree 24.6% | EasyE | Solve→ |
Find Maximum Non-decreasing Array Length 24.6% | HardH | Solve→ |
Candy Crush 24.6% | MediumM | Solve→ |
Shortest Subarray to be Removed to Make Array Sorted 24.6% | MediumM | Solve→ |
Count the Number of Good Subarrays 24.6% | MediumM | Solve→ |
Consecutive Numbers Sum 24.6% | HardH | Solve→ |
Recover Binary Search Tree 24.6% | MediumM | Solve→ |
Wiggle Sort 24.6% | MediumM | Solve→ |
Implement Queue using Stacks 24.6% | EasyE | Solve→ |
Next Greater Element I 24.6% | EasyE | Solve→ |
Encode and Decode Strings 24.6% | MediumM | Solve→ |
Verify Preorder Sequence in Binary Search Tree 24.6% | MediumM | Solve→ |
Number of Adjacent Elements With the Same Color 24.6% | MediumM | Solve→ |
24 Game 24.6% | HardH | Solve→ |
Count Binary Substrings 24.6% | EasyE | Solve→ |
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Maximum Size Subarray Sum Equals k 24.6% | MediumM | Solve→ |
Employee Free Time 24.6% | HardH | Solve→ |
Minimum Operations to Make the Array Increasing 24.6% | EasyE | Solve→ |
Nth Digit 24.6% | MediumM | Solve→ |
Robot Bounded In Circle 24.6% | MediumM | Solve→ |
Word Pattern II 24.6% | MediumM | Solve→ |
Partition to K Equal Sum Subsets 24.6% | MediumM | Solve→ |
Minimum Absolute Difference Between Elements With Constraint 24.6% | MediumM | Solve→ |
Department Top Three Salaries 24.6% | HardH | Solve→ |
Construct Binary Tree from Inorder and Postorder Traversal 24.6% | MediumM | Solve→ |
Implement Rand10() Using Rand7() 24.6% | MediumM | Solve→ |
Flip Game II 24.6% | MediumM | Solve→ |
Lowest Common Ancestor of a Binary Tree IV 24.6% | MediumM | Solve→ |
Surrounded Regions 24.6% | MediumM | Solve→ |
Next Greater Element II 24.6% | MediumM | Solve→ |
Unit Conversion II 24.6% | MediumM | Solve→ |
Maximum Number of Events That Can Be Attended 24.6% | MediumM | Solve→ |
Maximum Sum Circular Subarray 24.6% | MediumM | Solve→ |
As Far from Land as Possible 24.6% | MediumM | Solve→ |
Sort an Array 24.6% | MediumM | Solve→ |
Lowest Common Ancestor of a Binary Tree III 24.6% | MediumM | Solve→ |
Merge Sorted Array 24.6% | EasyE | Solve→ |
Length of Longest Subarray With at Most K Frequency 24.6% | MediumM | Solve→ |
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Frequently Asked Questions
What LeetCode problems are tagged to TikTok?
Our current TikTok practice dataset contains 348 tagged coding problems, including LRU Cache, Number of Islands, Longest Increasing Subsequence. The difficulty breakdown is 34 Easy, 243 Medium, and 71 Hard problems.
How should I prepare for a TikTok coding interview?
Focus on the most frequently asked problems first, especially those with high frequency scores. TikTok interviews typically emphasize Array and String. Practice explaining your thought process while coding.
What is the difficulty level of TikTok coding interviews?
Based on our data, TikTok interviews include 34 Easy (10%), 243 Medium (70%), and 71 Hard (20%) problems.
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