Easy LeetCode Interview Questions

Master 748 easy difficulty coding problems frequently asked in technical interviews at top tech companies. Perfect for building confidence and fundamental problem-solving skills.

Easy (2331)Medium (5229)Hard (1850)

#1EasyFrequency: 100%

Two Sum

Asked at Google

Array Hash Table

#1

Rank

#408EasyFrequency: 96.8%

Valid Word Abbreviation

Asked at Meta

Two Pointers String

#2

Rank

#680EasyFrequency: 95.1%

Valid Palindrome II

Asked at Meta

Two Pointers String Greedy

#3

Rank

#1306EasyFrequency: 94.7%

Minimum Absolute Difference

Asked at PayPal

#4

Rank

#543EasyFrequency: 86.8%

Diameter of Binary Tree

Asked at Meta

Tree Depth-First Search Binary Tree DP on Trees

#5

Rank

#88EasyFrequency: 86.3%

Merge Sorted Array

Asked at Meta

Array Two Pointers Sorting

#6

Rank

#1019EasyFrequency: 85.8%

Squares of a Sorted Array

Asked at Uber

Array Two Pointers Sorting

#7

Rank

#121EasyFrequency: 83.8%

Best Time to Buy and Sell Stock

Asked at Amazon

Array Dynamic Programming

#8

Rank

#1112EasyFrequency: 82.7%

Find Words That Can Be Formed by Characters

Asked at PayPal

Array Hash Table String Counting

#9

Rank

#125EasyFrequency: 82.6%

Valid Palindrome

Asked at Meta

Two Pointers String

#10

Rank

#20EasyFrequency: 79%

Valid Parentheses

Asked at LinkedIn

String Stack Bracket Sequences

#11

Rank

#975EasyFrequency: 78%

Range Sum of BST

Asked at Meta

Tree Depth-First Search Binary Search Tree Binary Tree

#12

Rank

#9EasyFrequency: 76.9%

Palindrome Number

Asked at Infosys

#13

Rank

#3994EasyFrequency: 76.6%

Find The Least Frequent Digit

Asked at Flipkart

Array Hash Table Math Counting

#14

Rank

#14EasyFrequency: 76.4%

Longest Common Prefix

Asked at Apple

Array String Trie

#15

Rank

#206EasyFrequency: 75.8%

Reverse Linked List

Asked at Apple

Linked List Recursion

#16

Rank

#605EasyFrequency: 74.5%

Can Place Flowers

Asked at LinkedIn

#17

Rank

#160EasyFrequency: 73.9%

Intersection of Two Linked Lists

Asked at Airbnb

Hash Table Linked List Two Pointers

#18

Rank

#2654EasyFrequency: 73.2%

Count the Number of Vowel Strings in Range

Asked at PayPal

Array String Counting

#19

Rank

#346EasyFrequency: 73.1%

Moving Average from Data Stream

Asked at Meta

Array Design Queue Data Stream

#20

Rank

#26EasyFrequency: 70.8%

Remove Duplicates from Sorted Array

Asked at Microsoft

Array Two Pointers

#21

Rank

#169EasyFrequency: 70.4%

Majority Element

Asked at Microsoft

Array Hash Table Divide and Conquer Sorting Counting Boyer–Moore Majority Vote Algorithm

#22

Rank

#219EasyFrequency: 70.1%

Contains Duplicate II

Asked at Airbnb

Array Hash Table Sliding Window

#23

Rank

#242EasyFrequency: 69.8%

Valid Anagram

Asked at Infosys

Hash Table String Sorting

#24

Rank

#3778EasyFrequency: 69.8%

Transform Array by Parity

Asked at Infosys

Array Sorting Counting

#25

Rank

#1894EasyFrequency: 69.5%

Merge Strings Alternately

Asked at Google

Two Pointers String

#26

Rank

#2809EasyFrequency: 69.4%

Create Hello World Function

Asked at Google

#27

Rank

#13EasyFrequency: 69.2%

Roman to Integer

Asked at Microsoft

Hash Table Math String

#28

Rank

#1646EasyFrequency: 68.6%

Kth Missing Positive Number

Asked at Meta

Array Binary Search

#29

Rank

#628EasyFrequency: 67.8%

Maximum Product of Three Numbers

Asked at Salesforce

Array Math Sorting

#30

Rank

#70EasyFrequency: 67.6%

Climbing Stairs

Asked at Infosys

Math Dynamic Programming Memoization

#31

Rank

#283EasyFrequency: 67.6%

Move Zeroes

Asked at Infosys

Array Two Pointers

#32

Rank

#69EasyFrequency: 66.8%

Sqrt(x)

Asked at TikTok

Math Binary Search Newton's Method

#33

Rank

#21EasyFrequency: 66.7%

Merge Two Sorted Lists

Asked at Amazon

Linked List Recursion

#34

Rank

#1908EasyFrequency: 66%

Recyclable and Low Fat Products

Asked at Google

#35

Rank

#889EasyFrequency: 65.6%

Buddy Strings

Asked at DoorDash

Hash Table String

#36

Rank

#108EasyFrequency: 65.5%

Convert Sorted Array to Binary Search Tree

Asked at Airbnb

Array Divide and Conquer Tree Binary Search Tree Binary Tree

#37

Rank

#136EasyFrequency: 65.5%

Single Number

Asked at Airbnb

Array Bit Manipulation

#38

Rank

#190EasyFrequency: 65.5%

Reverse Bits

Asked at Airbnb

Divide and Conquer Bit Manipulation

#39

Rank

#202EasyFrequency: 65.5%

Happy Number

Asked at Airbnb

Hash Table Math Two Pointers Floyd's Cycle Finding Algorithm

#40

Rank

#217EasyFrequency: 65.5%

Contains Duplicate

Asked at Airbnb

Array Hash Table Sorting

#41

Rank

#415EasyFrequency: 65.5%

Add Strings

Asked at Airbnb

Math String Simulation

#42

Rank

#104EasyFrequency: 65%

Maximum Depth of Binary Tree

Asked at LinkedIn

Tree Depth-First Search Breadth-First Search Binary Tree

#43

Rank

#1915EasyFrequency: 64.6%

Check if One String Swap Can Make Strings Equal

Asked at DoorDash

Hash Table String Counting

#44

Rank

#101EasyFrequency: 63.4%

Symmetric Tree

Asked at LinkedIn

Tree Depth-First Search Breadth-First Search Binary Tree

#45

Rank

#969EasyFrequency: 63.3%

Number of Recent Calls

Asked at Databricks

Design Queue Data Stream

#46

Rank

#1570EasyFrequency: 63.1%

Final Prices With a Special Discount in a Shop

Asked at Uber

Array Stack Monotonic Stack

#47

Rank

#205EasyFrequency: 62.6%

Isomorphic Strings

Asked at LinkedIn

Hash Table String

#48

Rank

#2502EasyFrequency: 62.5%

Sort the People

Asked at Infosys

Array Hash Table String Sorting

#49

Rank

#3952EasyFrequency: 62.5%

Trionic Array I

Asked at Infosys

#50

Rank

#1127EasyFrequency: 62.2%

Last Stone Weight

Asked at PayPal

Array Heap (Priority Queue)

#51

Rank

#270EasyFrequency: 61.8%

Closest Binary Search Tree Value

Asked at Meta

Binary Search Tree Depth-First Search Binary Search Tree Binary Tree

#52

Rank

#243EasyFrequency: 61.6%

Shortest Word Distance

Asked at LinkedIn

#53

Rank

#817EasyFrequency: 61.4%

Design HashMap

Asked at TikTok

Array Hash Table Linked List Design Hash Function

#54

Rank

#851EasyFrequency: 61.1%

Goat Latin

Asked at Meta

#55

Rank

#671EasyFrequency: 60.7%

Second Minimum Node In a Binary Tree

Asked at LinkedIn

Tree Depth-First Search Binary Tree

#56

Rank

#745EasyFrequency: 60.7%

Find Smallest Letter Greater Than Target

Asked at LinkedIn

Array Binary Search

#57

Rank

#118EasyFrequency: 60.6%

Pascal's Triangle

Asked at Amazon

Array Dynamic Programming

#58

Rank

#3736EasyFrequency: 60%

Find Valid Pair of Adjacent Digits in String

Asked at Oracle

Hash Table String Counting

#59

Rank

#1341EasyFrequency: 59.6%

Split a String in Balanced Strings

Asked at Salesforce

String Greedy Counting

#60

Rank

#1013EasyFrequency: 59.4%

Fibonacci Number

Asked at Infosys

Math Dynamic Programming Recursion Memoization

#61

Rank

#2337EasyFrequency: 59.4%

Remove Digit From Number to Maximize Result

Asked at Infosys

String Greedy Enumeration

#62

Rank

#2058EasyFrequency: 58.6%

Concatenation of Array

Asked at Google

Array Simulation

#63

Rank

#2383EasyFrequency: 58.5%

Add Two Integers

Asked at Google

#64

Rank

#27EasyFrequency: 57.9%

Remove Element

Asked at Google

Array Two Pointers

#65

Rank

#1434EasyFrequency: 57.5%

Decrypt String from Alphabet to Integer Mapping

Asked at Salesforce

#66

Rank

#234EasyFrequency: 57.2%

Palindrome Linked List

Asked at Amazon

Linked List Two Pointers Stack Recursion

#67

Rank

#35EasyFrequency: 57%

Search Insert Position

Asked at Microsoft

Array Binary Search

#68

Rank

#890EasyFrequency: 55.9%

Lemonade Change

Asked at Infosys

#69

Rank

#2594EasyFrequency: 55.8%

Count Pairs Of Similar Strings

Asked at Oracle

Array Hash Table String Bit Manipulation Counting

#70

Rank

#1128EasyFrequency: 55.6%

Remove All Adjacent Duplicates In String

Asked at Meta

#71

Rank

#66EasyFrequency: 55.3%

Plus One

Asked at Google

#72

Rank

#387EasyFrequency: 55.2%

First Unique Character in a String

Asked at Amazon

Hash Table String Queue Counting

#73

Rank

#28EasyFrequency: 55.2%

Find the Index of the First Occurrence in a String

Asked at Microsoft

Two Pointers String String Matching Z Algorithm Knuth–Morris–Pratt Algorithm Boyer–Moore String-Search Algorithm

#74

Rank

#175EasyFrequency: 55.1%

Combine Two Tables

Asked at Google

#75

Rank

#2177EasyFrequency: 55.1%

Check Whether Two Strings are Almost Equivalent

Asked at Salesforce

Hash Table String Counting

#76

Rank

#1102EasyFrequency: 55.1%

Check If a Number Is Majority Element in a Sorted Array

Asked at Salesforce

Array Binary Search

#77

Rank

#1137EasyFrequency: 55.1%

Height Checker

Asked at Salesforce

Array Sorting Counting Sort Bubble Sort

#78

Rank

#3215EasyFrequency: 55.1%

Matrix Similarity After Cyclic Shifts

Asked at Salesforce

Array Math Matrix Simulation

#79

Rank

#3469EasyFrequency: 55.1%

Maximum Height of a Triangle

Asked at Salesforce

Array Enumeration

#80

Rank

#191EasyFrequency: 55%

Number of 1 Bits

Asked at Apple

Divide and Conquer Bit Manipulation

#81

Rank

#383EasyFrequency: 55%

Ransom Note

Asked at Apple

Hash Table String Counting

#82

Rank

#496EasyFrequency: 54.7%

Next Greater Element I

Asked at Amazon

Array Hash Table Stack Monotonic Stack

#83

Rank

#163EasyFrequency: 54.7%

Missing Ranges

Asked at Meta

#84

Rank

#485EasyFrequency: 54.5%

Max Consecutive Ones

Asked at Google

#85

Rank

#268EasyFrequency: 54.4%

Missing Number

Asked at Amazon

Array Hash Table Math Binary Search Bit Manipulation Sorting

#86

Rank

#777EasyFrequency: 54.1%

Toeplitz Matrix

Asked at Meta

#87

Rank

#367EasyFrequency: 53.7%

Valid Perfect Square

Asked at LinkedIn

Math Binary Search

#88

Rank

#67EasyFrequency: 53.4%

Add Binary

Asked at Google

Math String Bit Manipulation Simulation

#89

Rank

#231EasyFrequency: 53.4%

Power of Two

Asked at Google

Math Bit Manipulation Recursion

#90

Rank

#2679EasyFrequency: 53.4%

Count Distinct Numbers on Board

Asked at Oracle

Array Hash Table Math Simulation

#91

Rank

#1496EasyFrequency: 53.4%

Lucky Numbers in a Matrix

Asked at Oracle

#92

Rank

#733EasyFrequency: 53%

Flood Fill

Asked at Amazon

Array Depth-First Search Breadth-First Search Matrix

#93

Rank

#141EasyFrequency: 52.8%

Linked List Cycle

Asked at Microsoft

Hash Table Linked List Two Pointers Floyd's Cycle Finding Algorithm

#94

Rank

#359EasyFrequency: 52.3%

Logger Rate Limiter

Asked at Google

Hash Table Design Data Stream

#95

Rank

#792EasyFrequency: 51.8%

Binary Search

Asked at Google

Array Binary Search

#96

Rank

#303EasyFrequency: 51.8%

Range Sum Query - Immutable

Asked at Infosys

Array Design Prefix Sum

#97

Rank

#908EasyFrequency: 51.4%

Middle of the Linked List

Asked at Amazon

Linked List Two Pointers

#98

Rank

#252EasyFrequency: 51.4%

Meeting Rooms

Asked at TikTok

Array Sorting Quicksort

#99

Rank

#1146EasyFrequency: 51.4%

Greatest Common Divisor of Strings

Asked at TikTok

Math String Euclidean Algorithm Greatest Common Divisor

#100

Rank

#1291EasyFrequency: 51.3%

Immediate Food Delivery I

Asked at DoorDash

#101

Rank

#1888EasyFrequency: 51.3%

Find Nearest Point That Has the Same X or Y Coordinate

Asked at DoorDash

#102

Rank

#349EasyFrequency: 51.1%

Intersection of Two Arrays

Asked at Amazon

Array Hash Table Two Pointers Binary Search Sorting

#103

Rank

#697EasyFrequency: 50.6%

Degree of an Array

Asked at Oracle

Array Hash Table

#104

Rank

#246EasyFrequency: 50.5%

Strobogrammatic Number

Asked at Meta

Hash Table Two Pointers String

#105

Rank

#2186EasyFrequency: 50.3%

Count Vowel Substrings of a String

Asked at PayPal

Hash Table String

#106

Rank

#1390EasyFrequency: 50.3%

Average Selling Price

Asked at PayPal

#107

Rank

#110EasyFrequency: 50%

Balanced Binary Tree

Asked at Amazon

Tree Depth-First Search Binary Tree

#108

Rank

#171EasyFrequency: 49.9%

Excel Sheet Column Number

Asked at Uber

#109

Rank

#2977EasyFrequency: 49.9%

Check if a String Is an Acronym of Words

Asked at Uber

#110

Rank

#3034EasyFrequency: 49.9%

Points That Intersect With Cars

Asked at Uber

Array Hash Table Prefix Sum

#111

Rank

#1878EasyFrequency: 49.7%

Check if Array Is Sorted and Rotated

Asked at Amazon

#112

Rank

#617EasyFrequency: 48.8%

Merge Two Binary Trees

Asked at LinkedIn

Tree Depth-First Search Breadth-First Search Binary Tree

#113

Rank

#232EasyFrequency: 48.7%

Implement Queue using Stacks

Asked at Apple

Stack Design Queue

#114

Rank

#257EasyFrequency: 48.7%

Binary Tree Paths

Asked at Apple

String Backtracking Tree Depth-First Search Binary Tree

#115

Rank

#3252EasyFrequency: 48.7%

Count the Number of Incremovable Subarrays I

Asked at Apple

Array Two Pointers Binary Search Enumeration

#116

Rank

#100EasyFrequency: 48.1%

Same Tree

Asked at Amazon

Tree Depth-First Search Breadth-First Search Binary Tree

#117

Rank

#812EasyFrequency: 48.1%

Rotate String

Asked at Amazon

String String Matching

#118

Rank

#197EasyFrequency: 48%

Rising Temperature

Asked at Microsoft

#119

Rank

#643EasyFrequency: 47.5%

Maximum Average Subarray I

Asked at Meta

Array Sliding Window

#120

Rank

#266EasyFrequency: 47.5%

Palindrome Permutation

Asked at Uber

Hash Table String Bit Manipulation

#121

Rank

#290EasyFrequency: 47.5%

Word Pattern

Asked at Uber

Hash Table String

#122

Rank

#1066EasyFrequency: 47.5%

Fixed Point

Asked at Uber

Array Binary Search

#123

Rank

#1486EasyFrequency: 47.5%

Find the Distance Value Between Two Arrays

Asked at Uber

Array Two Pointers Binary Search Sorting

#124

Rank

#2093EasyFrequency: 47.5%

Check If String Is a Prefix of Array

Asked at Uber

Array Two Pointers String

#125

Rank

#2099EasyFrequency: 47.5%

Number of Strings That Appear as Substrings in Word

Asked at Uber

#126

Rank

#2331EasyFrequency: 47.5%

Intersection of Multiple Arrays

Asked at Uber

Array Hash Table Sorting Counting

#127

Rank

#2361EasyFrequency: 47.5%

Calculate Digit Sum of a String

Asked at Uber

String Simulation

#128

Rank

#345EasyFrequency: 47.4%

Reverse Vowels of a String

Asked at Oracle

Two Pointers String

#129

Rank

#168EasyFrequency: 47.3%

Excel Sheet Column Title

Asked at Microsoft

#130

Rank

#448EasyFrequency: 47%

Find All Numbers Disappeared in an Array

Asked at Google

Array Hash Table

#131

Rank

#1603EasyFrequency: 47%

Running Sum of 1d Array

Asked at Google

Array Prefix Sum

#132

Rank

#58EasyFrequency: 46.5%

Length of Last Word

Asked at Google

#133

Rank

#1258EasyFrequency: 46.5%

Article Views I

Asked at Amazon

#134

Rank

#2436EasyFrequency: 46.5%

Make Array Zero by Subtracting Equal Amounts

Asked at Amazon

Array Hash Table Greedy Sorting Heap (Priority Queue)Simulation

#135

Rank

#1400EasyFrequency: 46%

Find Winner on a Tic Tac Toe Game

Asked at Apple

Array Hash Table Matrix Simulation

#136

Rank

#1829EasyFrequency: 45.7%

Maximum Units on a Truck

Asked at Salesforce

Array Greedy Sorting

#137

Rank

#344EasyFrequency: 45.6%

Reverse String

Asked at Amazon

Two Pointers String

#138

Rank

#278EasyFrequency: 45%

First Bad Version

Asked at Meta

Binary Search Interactive

#139

Rank

#181EasyFrequency: 44.8%

Employees Earning More Than Their Managers

Asked at Google

#140

Rank

#170EasyFrequency: 44.7%

Two Sum III - Data structure design

Asked at LinkedIn

Array Hash Table Two Pointers Design Data Stream

#141

Rank

#1693EasyFrequency: 44.7%

Sum of All Odd Length Subarrays

Asked at LinkedIn

Array Math Prefix Sum

#142

Rank

#94EasyFrequency: 44.2%

Binary Tree Inorder Traversal

Asked at Microsoft

Stack Tree Depth-First Search Binary Tree

#143

Rank

#584EasyFrequency: 44%

Find Customer Referee

Asked at Google

#144

Rank

#3062EasyFrequency: 43.7%

Create a DataFrame from List

Asked at Google

#145

Rank

#83EasyFrequency: 43.3%

Remove Duplicates from Sorted List

Asked at Microsoft

#146

Rank

#258EasyFrequency: 43.3%

Add Digits

Asked at Microsoft

Math Simulation Number Theory

#147

Rank

#392EasyFrequency: 43.3%

Is Subsequence

Asked at Meta

Two Pointers String Dynamic Programming

#148

Rank

#747EasyFrequency: 43.1%

Min Cost Climbing Stairs

Asked at Amazon

Array Dynamic Programming

#149

Rank

#226EasyFrequency: 43%

Invert Binary Tree

Asked at Google

Tree Depth-First Search Breadth-First Search Binary Tree

#150

Rank

#1801EasyFrequency: 42.5%

Average Time of Process per Machine

Asked at Amazon

#151

Rank

#595EasyFrequency: 42.4%

Big Countries

Asked at Google

#152

Rank

#326EasyFrequency: 42%

Power of Three

Asked at Google

#153

Rank

#389EasyFrequency: 42%

Find the Difference

Asked at Google

Hash Table String Bit Manipulation Sorting

#154

Rank

#412EasyFrequency: 42%

Fizz Buzz

Asked at Amazon

Math String Simulation

#155

Rank

#724EasyFrequency: 42%

Find Pivot Index

Asked at Meta

Array Prefix Sum

#156

Rank

#1319EasyFrequency: 41.7%

Unique Number of Occurrences

Asked at Google

Array Hash Table

#157

Rank

#645EasyFrequency: 41.4%

Set Mismatch

Asked at Amazon

Array Hash Table Bit Manipulation Sorting

#158

Rank

#1708EasyFrequency: 41.4%

Design Parking System

Asked at Amazon

Design Simulation Counting

#159

Rank

#2327EasyFrequency: 41.2%

Largest Number After Digit Swaps by Parity

Asked at Salesforce

Sorting Heap (Priority Queue)

#160

Rank

#2547EasyFrequency: 41.2%

Odd String Difference

Asked at Salesforce

Array Hash Table String

#161

Rank

#789EasyFrequency: 40.8%

Kth Largest Element in a Stream

Asked at Amazon

Tree Design Binary Search Tree Heap (Priority Queue)Binary Tree Data Stream

#162

Rank

#112EasyFrequency: 40.5%

Path Sum

Asked at Microsoft

Tree Depth-First Search Breadth-First Search Binary Tree

#163

Rank

#1580EasyFrequency: 40.5%

Shuffle the Array

Asked at Microsoft

#164

Rank

#455EasyFrequency: 40.2%

Assign Cookies

Asked at Amazon

Array Two Pointers Greedy Sorting Quicksort

#165

Rank

#3421EasyFrequency: 40.2%

Count Pairs That Form a Complete Day I

Asked at Infosys

Array Hash Table Counting

#166

Rank

#1626EasyFrequency: 39.5%

Can Make Arithmetic Progression From Sequence

Asked at Google

#167

Rank

#2663EasyFrequency: 39.4%

Distribute Money to Maximum Children

Asked at Apple

#168

Rank

#1528EasyFrequency: 38.9%

Kids With the Greatest Number of Candies

Asked at Amazon

#169

Rank

#228EasyFrequency: 38.6%

Summary Ranges

Asked at Google

#170

Rank

#225EasyFrequency: 38.2%

Implement Stack using Queues

Asked at Google

Stack Design Queue

#171

Rank

#3227EasyFrequency: 38.2%

Find Missing and Repeated Values

Asked at Google

Array Hash Table Math Matrix

#172

Rank

#696EasyFrequency: 38.2%

Count Binary Substrings

Asked at Microsoft

Two Pointers String

#173

Rank

#990EasyFrequency: 37.9%

Verifying an Alien Dictionary

Asked at Uber

Array Hash Table String

#174

Rank

#2732EasyFrequency: 36.8%

Counter

Asked at Google

#175

Rank

#577EasyFrequency: 36.8%

Employee Bonus

Asked at Google

#176

Rank

#653EasyFrequency: 35.7%

Two Sum IV - Input is a BST

Asked at Microsoft

Hash Table Two Pointers Tree Depth-First Search Breadth-First Search Binary Search Tree Binary Tree

#177

Rank

#1426EasyFrequency: 35.7%

Find N Unique Integers Sum up to Zero

Asked at Microsoft

#178

Rank

#1509EasyFrequency: 35.7%

Replace Employee ID With The Unique Identifier

Asked at Microsoft

#179

Rank

#1510EasyFrequency: 35.7%

Find Lucky Integer in an Array

Asked at Microsoft

Array Hash Table Counting

#180

Rank

#1630EasyFrequency: 35.7%

Count Odd Numbers in an Interval Range

Asked at Microsoft

#181

Rank

#1724EasyFrequency: 35.7%

Customer Who Visited but Did Not Make Any Transactions

Asked at Microsoft

#182

Rank

#1983EasyFrequency: 35.7%

Maximum Population Year

Asked at Microsoft

Array Counting Prefix Sum

#183

Rank

#932EasyFrequency: 35%

Monotonic Array

Asked at Meta

#184

Rank

#941EasyFrequency: 35%

Sort Array By Parity

Asked at Meta

Array Two Pointers Sorting

#185

Rank

#459EasyFrequency: 34.8%

Repeated Substring Pattern

Asked at Google

String String Matching Z Algorithm Knuth–Morris–Pratt Algorithm

#186

Rank

#874EasyFrequency: 34.8%

Backspace String Compare

Asked at Google

Two Pointers String Stack Simulation

#187

Rank

#1153EasyFrequency: 34.3%

Product Sales Analysis I

Asked at Microsoft

#188

Rank

#1203EasyFrequency: 34.3%

Print in Order

Asked at Microsoft

#189

Rank

#1642EasyFrequency: 34.3%

Water Bottles

Asked at Microsoft

Math Simulation

#190

Rank

#1873EasyFrequency: 34.3%

Longest Nice Substring

Asked at Microsoft

Hash Table String Divide and Conquer Bit Manipulation Sliding Window

#191

Rank

#1916EasyFrequency: 34.3%

Find Center of Star Graph

Asked at Microsoft

#192

Rank

#2308EasyFrequency: 34.3%

Divide Array Into Equal Pairs

Asked at Microsoft

Array Hash Table Bit Manipulation Counting

#193

Rank

#1415EasyFrequency: 34.2%

Students and Examinations

Asked at Amazon

#194

Rank

#1256EasyFrequency: 33.7%

Rank Transform of an Array

Asked at Google

Array Hash Table Sorting

#195

Rank

#1078EasyFrequency: 33.7%

Remove Outermost Parentheses

Asked at Google

String Stack Bracket Sequences

#196

Rank

#3379EasyFrequency: 33.7%

Score of a String

Asked at Google

#197

Rank

#182EasyFrequency: 33.3%

Duplicate Emails

Asked at Amazon

#198

Rank

#203EasyFrequency: 33.3%

Remove Linked List Elements

Asked at Amazon

Linked List Recursion

#199

Rank

#782EasyFrequency: 33.3%

Jewels and Stones

Asked at Amazon

Hash Table String

#200

Rank

#463EasyFrequency: 33.3%

Island Perimeter

Asked at Oracle

Array Depth-First Search Breadth-First Search Matrix

#201

Rank

#1382EasyFrequency: 33.3%

Calculate Amount Paid in Taxes

Asked at Oracle

Array Simulation

#202

Rank

#1411EasyFrequency: 33.3%

Convert Binary Number in a Linked List to Integer

Asked at Oracle

Linked List Math

#203

Rank

#541EasyFrequency: 33.1%

Reverse String II

Asked at Google

Two Pointers String

#204

Rank

#1791EasyFrequency: 33.1%

Richest Customer Wealth

Asked at Google

#205

Rank

#263EasyFrequency: 33.1%

Ugly Number

Asked at Google

#206

Rank

#3610EasyFrequency: 33.1%

Find X-Sum of All K-Long Subarrays I

Asked at Google

Array Hash Table Sliding Window Heap (Priority Queue)

#207

Rank

#2121EasyFrequency: 32.8%

Find if Path Exists in Graph

Asked at Microsoft

Depth-First Search Breadth-First Search Union-Find Graph Theory

#208

Rank

#3396EasyFrequency: 32.8%

Valid Word

Asked at Microsoft

#209

Rank

#3321EasyFrequency: 32.4%

Type of Triangle

Asked at Google

Array Math Sorting Polygons

#210

Rank

#414EasyFrequency: 32.3%

Third Maximum Number

Asked at Amazon

#211

Rank

#572EasyFrequency: 31.9%

Subtree of Another Tree

Asked at Meta

Tree Depth-First Search String Matching Binary Tree Hash Function

#212

Rank

#1205EasyFrequency: 31.9%

Defanging an IP Address

Asked at Meta

#213

Rank

#898EasyFrequency: 31.8%

Transpose Matrix

Asked at Google

Array Matrix Simulation

#214

Rank

#196EasyFrequency: 31.3%

Delete Duplicate Emails

Asked at Infosys

#215

Rank

#1047EasyFrequency: 31.3%

Maximize Sum Of Array After K Negations

Asked at Infosys

Array Greedy Sorting

#216

Rank

#1329EasyFrequency: 31.3%

Minimum Cost to Move Chips to The Same Position

Asked at Infosys

Array Math Greedy

#217

Rank

#409EasyFrequency: 31.1%

Longest Palindrome

Asked at Google

Hash Table String Greedy

#218

Rank

#861EasyFrequency: 31.1%

Flipping an Image

Asked at Google

Array Two Pointers Bit Manipulation Matrix Simulation

#219

Rank

#338EasyFrequency: 31.1%

Counting Bits

Asked at Microsoft

Dynamic Programming Bit Manipulation

#220

Rank

#441EasyFrequency: 31.1%

Arranging Coins

Asked at Microsoft

Math Binary Search

#221

Rank

#1062EasyFrequency: 31.1%

Partition Array Into Three Parts With Equal Sum

Asked at Microsoft

#222

Rank

#1802EasyFrequency: 31.1%

Number of Students Unable to Eat Lunch

Asked at Microsoft

Array Stack Queue Simulation

#223

Rank

#2076EasyFrequency: 31.1%

Sum of Digits of String After Convert

Asked at Microsoft

String Simulation

#224

Rank

#2634EasyFrequency: 31.1%

Minimum Common Value

Asked at Microsoft

Array Hash Table Two Pointers Binary Search

#225

Rank

#2902EasyFrequency: 31.1%

Max Pair Sum in an Array

Asked at Microsoft

Array Hash Table

#226

Rank

#3236EasyFrequency: 31.1%

Smallest Missing Integer Greater Than Sequential Prefix Sum

Asked at Microsoft

Array Hash Table Sorting

#227

Rank

#183EasyFrequency: 30.7%

Customers Who Never Order

Asked at Meta

#228

Rank

#1781EasyFrequency: 30.7%

Check If Two String Arrays are Equivalent

Asked at Meta

#229

Rank

#1833EasyFrequency: 30.4%

Find the Highest Altitude

Asked at Google

Array Prefix Sum

#230

Rank

#610EasyFrequency: 30.4%

Triangle Judgement

Asked at Google

#231

Rank

#561EasyFrequency: 30.2%

Array Partition

Asked at Amazon

Array Greedy Sorting Counting Sort

#232

Rank

#1231EasyFrequency: 30.2%

Replace Elements with Greatest Element on Right Side

Asked at Amazon

#233

Rank

#1392EasyFrequency: 29.7%

Find the Difference of Two Arrays

Asked at Google

Array Hash Table

#234

Rank

#1468EasyFrequency: 29.7%

Check If N and Its Double Exist

Asked at Google

Array Hash Table Two Pointers Binary Search Sorting

#235

Rank

#1537EasyFrequency: 29.7%

Maximum Score After Splitting a String

Asked at Google

String Prefix Sum

#236

Rank

#2048EasyFrequency: 29.7%

Build Array from Permutation

Asked at Google

Array Simulation

#237

Rank

#2734EasyFrequency: 29.7%

Array Prototype Last

Asked at Google

#238

Rank

#1031EasyFrequency: 29.5%

Add to Array-Form of Integer

Asked at Meta

#239

Rank

#1245EasyFrequency: 29.5%

User Activity for the Past 30 Days I

Asked at Meta

#240

Rank

#1395EasyFrequency: 29.5%

Minimum Time Visiting All Points

Asked at Meta

Array Math Geometry

#241

Rank

#3334EasyFrequency: 29.5%

Apple Redistribution into Boxes

Asked at Apple

Array Greedy Sorting

#242

Rank

#2433EasyFrequency: 29.5%

Best Poker Hand

Asked at Apple

Array Hash Table Counting

#243

Rank

#1651EasyFrequency: 29.3%

Shuffle String

Asked at Microsoft

#244

Rank

#1742EasyFrequency: 29.3%

Widest Vertical Area Between Two Points Containing No Points

Asked at Microsoft

#245

Rank

#557EasyFrequency: 29.1%

Reverse Words in a String III

Asked at Amazon

Two Pointers String

#246

Rank

#661EasyFrequency: 29.1%

Image Smoother

Asked at Amazon

#247

Rank

#1227EasyFrequency: 29.1%

Number of Equivalent Domino Pairs

Asked at Amazon

Array Hash Table Counting

#248

Rank

#1476EasyFrequency: 29.1%

Count Negative Numbers in a Sorted Matrix

Asked at Amazon

Array Binary Search Matrix

#249

Rank

#1619EasyFrequency: 29.1%

Path Crossing

Asked at Amazon

Hash Table String

#250

Rank

#1993EasyFrequency: 29.1%

Sum of All Subset XOR Totals

Asked at Amazon

Array Math Backtracking Bit Manipulation Combinatorics Enumeration

#251

Rank

#2737EasyFrequency: 29.1%

Row With Maximum Ones

Asked at Amazon

#252

Rank

#3263EasyFrequency: 29.1%

Divide an Array Into Subarrays With Minimum Cost I

Asked at Amazon

Array Sorting Enumeration

#253

Rank

#530EasyFrequency: 28.9%

Minimum Absolute Difference in BST

Asked at Google

Tree Depth-First Search Breadth-First Search Binary Search Tree Binary Tree

#254

Rank

#830EasyFrequency: 28.9%

Largest Triangle Area

Asked at Google

Array Math Geometry Polygons

#255

Rank

#350EasyFrequency: 28.9%

Intersection of Two Arrays II

Asked at Google

Array Hash Table Two Pointers Binary Search Sorting

#256

Rank

#1168EasyFrequency: 28.9%

Duplicate Zeros

Asked at Google

Array Two Pointers

#257

Rank

#1482EasyFrequency: 28.9%

How Many Numbers Are Smaller Than the Current Number

Asked at Google

Array Hash Table Sorting Counting Sort

#258

Rank

#1635EasyFrequency: 28.9%

Number of Good Pairs

Asked at Google

Array Hash Table Math Counting

#259

Rank

#520EasyFrequency: 28.1%

Detect Capital

Asked at Google

#260

Rank

#119EasyFrequency: 28.1%

Pascal's Triangle II

Asked at Google

Array Dynamic Programming

#261

Rank

#1421EasyFrequency: 28.1%

Find Numbers with Even Number of Digits

Asked at Google

#262

Rank

#404EasyFrequency: 28.1%

Sum of Left Leaves

Asked at Meta

Tree Depth-First Search Breadth-First Search Binary Tree

#263

Rank

#682EasyFrequency: 27.8%

Baseball Game

Asked at Amazon

Array Stack Simulation

#264

Rank

#2598EasyFrequency: 27.7%

Shortest Distance to Target String in a Circular Array

Asked at Salesforce

#265

Rank

#1363EasyFrequency: 27.3%

Greatest English Letter in Upper and Lower Case

Asked at Microsoft

Hash Table String Enumeration

#266

Rank

#1532EasyFrequency: 27.3%

Reformat The String

Asked at Microsoft

#267

Rank

#1609EasyFrequency: 27.3%

Find All The Lonely Nodes

Asked at Microsoft

Tree Depth-First Search Breadth-First Search Binary Tree

#268

Rank

#1618EasyFrequency: 27.3%

Delete N Nodes After M Nodes of a Linked List

Asked at Microsoft

#269

Rank

#1698EasyFrequency: 27.3%

Replace All ?'s to Avoid Consecutive Repeating Characters

Asked at Microsoft

#270

Rank

#1942EasyFrequency: 27.3%

Primary Department for Each Employee

Asked at Microsoft

#271

Rank

#1950EasyFrequency: 27.3%

Sign of the Product of an Array

Asked at Microsoft

#272

Rank

#2083EasyFrequency: 27.3%

Three Divisors

Asked at Microsoft

Math Enumeration Number Theory Prime Factorization Sieve Theory

#273

Rank

#2243EasyFrequency: 27.3%

Check if All A's Appears Before All B's

Asked at Microsoft

#274

Rank

#2453EasyFrequency: 27.3%

All the Matches of the League

Asked at Microsoft

#275

Rank

#2524EasyFrequency: 27.3%

Largest Positive Integer That Exists With Its Negative

Asked at Microsoft

Array Hash Table Two Pointers Sorting

#276

Rank

#2813EasyFrequency: 27.3%

To Be Or Not To Be

Asked at Microsoft

#277

Rank

#3320EasyFrequency: 27.3%

Maximum Number of Operations With the Same Score I

Asked at Microsoft

Array Simulation

#278

Rank

#1882EasyFrequency: 27.3%

The Number of Employees Which Report to Each Employee

Asked at Microsoft

#279

Rank

#1514EasyFrequency: 27.3%

Minimum Value to Get Positive Step by Step Sum

Asked at Microsoft

Array Prefix Sum

#280

Rank

#4009EasyFrequency: 27.3%

Bitwise OR of Even Numbers in an Array

Asked at Microsoft

Array Bit Manipulation Simulation

#281

Rank

#657EasyFrequency: 27.2%

Robot Return to Origin

Asked at Google

String Simulation

#282

Rank

#144EasyFrequency: 27.2%

Binary Tree Preorder Traversal

Asked at Google

Stack Tree Depth-First Search Binary Tree

#283

Rank

#594EasyFrequency: 27.2%

Longest Harmonious Subsequence

Asked at Google

Array Hash Table Sliding Window Sorting Counting

#284

Rank

#674EasyFrequency: 26.7%

Longest Continuous Increasing Subsequence

Asked at Meta

#285

Rank

#1149EasyFrequency: 26.7%

Intersection of Three Sorted Arrays

Asked at Meta

Array Hash Table Binary Search Counting

#286

Rank

#1161EasyFrequency: 26.7%

Project Employees I

Asked at Meta

#287

Rank

#1338EasyFrequency: 26.7%

Queries Quality and Percentage

Asked at Meta

#288

Rank

#1498EasyFrequency: 26.7%

Find a Corresponding Node of a Binary Tree in a Clone of That Tree

Asked at Meta

Tree Depth-First Search Breadth-First Search Binary Tree

#289

Rank

#1737EasyFrequency: 26.7%

Maximum Nesting Depth of the Parentheses

Asked at Meta

String Stack Bracket Sequences

#290

Rank

#1848EasyFrequency: 26.7%

Sum of Unique Elements

Asked at Meta

Array Hash Table Counting

#291

Rank

#2316EasyFrequency: 26.7%

Count Hills and Valleys in an Array

Asked at Meta

#292

Rank

#837EasyFrequency: 26.5%

Most Common Word

Asked at Amazon

Array Hash Table String Counting

#293

Rank

#958EasyFrequency: 26.5%

Sort Array By Parity II

Asked at Amazon

Array Two Pointers Sorting

#294

Rank

#1044EasyFrequency: 26.5%

Find Common Characters

Asked at Amazon

Array Hash Table String

#295

Rank

#1136EasyFrequency: 26.5%

Actors and Directors Who Cooperated At Least Three Times

Asked at Amazon

#296

Rank

#1174EasyFrequency: 26.5%

Sales Analysis III

Asked at Amazon

#297

Rank

#1462EasyFrequency: 26.5%

List the Products Ordered in a Period

Asked at Amazon

#298

Rank

#1827EasyFrequency: 26.5%

Invalid Tweets

Asked at Amazon

#299

Rank

#2015EasyFrequency: 26.5%

Determine Whether Matrix Can Be Obtained By Rotation

Asked at Amazon

#300

Rank

#2032EasyFrequency: 26.5%

Largest Odd Number in String

Asked at Amazon

Math String Greedy

#301

Rank

#2116EasyFrequency: 26.5%

Count Number of Pairs With Absolute Difference K

Asked at Amazon

Array Hash Table Counting

#302

Rank

#3275EasyFrequency: 26.5%

Minimum Number of Pushes to Type Word I

Asked at Amazon

Math String Greedy

#303

Rank

#3408EasyFrequency: 26.5%

Count the Number of Special Characters I

Asked at Amazon

Hash Table String

#304

Rank

#3656EasyFrequency: 26.5%

Minimum Number of Operations to Make Elements in Array Distinct

Asked at Amazon

Array Hash Table

#305

Rank

#3684EasyFrequency: 26.5%

Substring Matching Pattern

Asked at Amazon

String String Matching

#306

Rank

#3768EasyFrequency: 26.5%

Check If Digits Are Equal in String After Operations I

Asked at Amazon

Math String Simulation Combinatorics Number Theory

#307

Rank

#342EasyFrequency: 26.3%

Power of Four

Asked at Google

Math Bit Manipulation Recursion

#308

Rank

#1666EasyFrequency: 26.3%

Make The String Great

Asked at Google

#309

Rank

#2132EasyFrequency: 26.3%

Convert 1D Array Into 2D Array

Asked at Google

Array Matrix Simulation

#310

Rank

#2427EasyFrequency: 26.3%

First Letter to Appear Twice

Asked at Google

Hash Table String Bit Manipulation Counting

#311

Rank

#3612EasyFrequency: 26.3%

Adjacent Increasing Subarrays Detection I

Asked at Google

#312

Rank

#501EasyFrequency: 25.4%

Find Mode in Binary Search Tree

Asked at Google

Tree Depth-First Search Binary Search Tree Binary Tree

#313

Rank

#748EasyFrequency: 25.4%

Largest Number At Least Twice of Others

Asked at Google

#314

Rank

#2320EasyFrequency: 25.4%

Find All K-Distant Indices in an Array

Asked at Google

Array Two Pointers

#315

Rank

#506EasyFrequency: 25.4%

Relative Ranks

Asked at Google

Array Sorting Heap (Priority Queue)

#316

Rank

#783EasyFrequency: 25.4%

Search in a Binary Search Tree

Asked at Google

Tree Binary Search Tree Binary Tree

#317

Rank

#1236EasyFrequency: 25.4%

N-th Tribonacci Number

Asked at Google

Math Dynamic Programming Memoization

#318

Rank

#292EasyFrequency: 25.4%

Nim Game

Asked at Google

Math Brainteaser Minimax Game Theory Nim Game Impartial Game

#319

Rank

#3429EasyFrequency: 25.4%

Special Array I

Asked at Google

#320

Rank

#1741EasyFrequency: 25.3%

Sort Array by Increasing Frequency

Asked at Oracle

Array Hash Table Sorting

#321

Rank

#1283EasyFrequency: 25.3%

Reformat Date

Asked at Oracle

#322

Rank

#2173EasyFrequency: 25.3%

Number of Valid Words in a Sentence

Asked at Oracle

#323

Rank

#1773EasyFrequency: 25.3%

Percentage of Users Attended a Contest

Asked at Oracle

#324

Rank

#1079EasyFrequency: 25.1%

Sum of Root To Leaf Binary Numbers

Asked at Amazon

Tree Depth-First Search Binary Tree

#325

Rank

#1301EasyFrequency: 25.1%

Reformat Department Table

Asked at Amazon

#326

Rank

#2264EasyFrequency: 25.1%

Minimum Sum of Four Digit Number After Splitting Digits

Asked at Amazon

Math Greedy Sorting

#327

Rank

#597EasyFrequency: 25.1%

Friend Requests I: Overall Acceptance Rate

Asked at Meta

#328

Rank

#637EasyFrequency: 25.1%

Average of Levels in Binary Tree

Asked at Meta

Tree Depth-First Search Breadth-First Search Binary Tree

#329

Rank

#2917EasyFrequency: 25.1%

Count Pairs Whose Sum is Less than Target

Asked at Meta

Array Two Pointers Binary Search Sorting

#330

Rank

#3871EasyFrequency: 25.1%

Minimum Deletions for At Most K Distinct Characters

Asked at Meta

Hash Table String Greedy Sorting Counting

#331

Rank

#111EasyFrequency: 25%

Minimum Depth of Binary Tree

Asked at Microsoft

Tree Depth-First Search Breadth-First Search Binary Tree

#332

Rank

#596EasyFrequency: 25%

Classes With at Least 5 Students

Asked at Microsoft

#333

Rank

#866EasyFrequency: 25%

Rectangle Overlap

Asked at Microsoft

#334

Rank

#1927EasyFrequency: 25%

Maximum Ascending Subarray Sum

Asked at Microsoft

#335

Rank

#3788EasyFrequency: 25%

Maximum Unique Subarray Sum After Deletion

Asked at Microsoft

Array Hash Table Greedy

#336

Rank

#978EasyFrequency: 24.6%

Valid Mountain Array

Asked at TikTok

#337

Rank

#1938EasyFrequency: 24.6%

Minimum Operations to Make the Array Increasing

Asked at TikTok

#338

Rank

#401EasyFrequency: 24.4%

Binary Watch

Asked at Google

Backtracking Bit Manipulation

#339

Rank

#950EasyFrequency: 24.4%

X of a Kind in a Deck of Cards

Asked at Google

Array Hash Table Math Counting Number Theory Euclidean Algorithm Greatest Common Divisor

#340

Rank

#965EasyFrequency: 24.4%

Unique Email Addresses

Asked at Google

Array Hash Table String

#341

Rank

#2210EasyFrequency: 24.4%

Find Target Indices After Sorting Array

Asked at Google

Array Binary Search Sorting

#342

Rank

#2292EasyFrequency: 24.4%

Counting Words With a Given Prefix

Asked at Google

Array String String Matching

#343

Rank

#2707EasyFrequency: 24.4%

Merge Two 2D Arrays by Summing Values

Asked at Google

Array Hash Table Two Pointers

#344

Rank

#1574EasyFrequency: 24.4%

Maximum Product of Two Elements in an Array

Asked at Google

Array Sorting Heap (Priority Queue)

#345

Rank

#3773EasyFrequency: 24.4%

Minimum Pair Removal to Sort Array I

Asked at Google

Array Hash Table Linked List Heap (Priority Queue)Simulation Doubly-Linked List Ordered Set

#346

Rank

#504EasyFrequency: 23.6%

Base 7

Asked at Amazon

#347

Rank

#1074EasyFrequency: 23.6%

High Five

Asked at Amazon

Array Hash Table Sorting Heap (Priority Queue)

#348

Rank

#1083EasyFrequency: 23.6%

Two Sum Less Than K

Asked at Amazon

Array Two Pointers Binary Search Sorting

#349

Rank

#1454EasyFrequency: 23.6%

Remove Palindromic Subsequences

Asked at Amazon

Two Pointers String

#350

Rank

#1463EasyFrequency: 23.6%

The K Weakest Rows in a Matrix

Asked at Amazon

Array Binary Search Sorting Heap (Priority Queue)Matrix

#351

Rank

#2650EasyFrequency: 23.6%

Split With Minimum Sum

Asked at Amazon

Math Greedy Sorting

#352

Rank

#157EasyFrequency: 23.4%

Read N Characters Given Read4

Asked at Meta

Array Simulation Interactive

#353

Rank

#405EasyFrequency: 23.4%

Convert a Number to Hexadecimal

Asked at Meta

Math String Bit Manipulation

#354

Rank

#1221EasyFrequency: 23.4%

Element Appearing More Than 25% In Sorted Array

Asked at Meta

#355

Rank

#1899EasyFrequency: 23.4%

Count Items Matching a Rule

Asked at Meta

#356

Rank

#1980EasyFrequency: 23.4%

Faulty Sensor

Asked at Meta

Array Two Pointers

#357

Rank

#2639EasyFrequency: 23.4%

Separate the Digits in an Array

Asked at Meta

Array Simulation

#358

Rank

#1960EasyFrequency: 23.4%

Check if the Sentence Is Pangram

Asked at Meta

Hash Table String

#359

Rank

#374EasyFrequency: 23.3%

Guess Number Higher or Lower

Asked at Google

Binary Search Interactive

#360

Rank

#981EasyFrequency: 23.3%

Delete Columns to Make Sorted

Asked at Google

Array String Longest Increasing Subsequence

#361

Rank

#3447EasyFrequency: 23.3%

Clear Digits

Asked at Google

String Stack Simulation

#362

Rank

#1704EasyFrequency: 23.3%

Special Positions in a Binary Matrix

Asked at Google

#363

Rank

#4107EasyFrequency: 23.3%

Find Missing Elements

Asked at Google

Array Hash Table Sorting

#364

Rank

#1179EasyFrequency: 22.5%

Game Play Analysis I

Asked at Microsoft

#365

Rank

#586EasyFrequency: 22.5%

Customer Placing the Largest Number of Orders

Asked at Microsoft

#366

Rank

#507EasyFrequency: 22.5%

Perfect Number

Asked at Microsoft

#367

Rank

#1440EasyFrequency: 22.5%

Convert Integer to the Sum of Two No-Zero Integers

Asked at Microsoft

#368

Rank

#1817EasyFrequency: 22.5%

Calculate Money in Leetcode Bank

Asked at Microsoft

#369

Rank

#4135EasyFrequency: 22.5%

Concatenate Non-Zero Digits and Multiply by Sum I

Asked at Microsoft

#370

Rank

#551EasyFrequency: 22.1%

Student Attendance Record I

Asked at Google

#371

Rank

#1730EasyFrequency: 22.1%

Special Array With X Elements Greater Than or Equal X

Asked at Google

Array Binary Search Sorting

#372

Rank

#2137EasyFrequency: 22.1%

Final Value of Variable After Performing Operations

Asked at Google

Array String Simulation

#373

Rank

#620EasyFrequency: 22.1%

Not Boring Movies

Asked at Google

#374

Rank

#2215EasyFrequency: 22.1%

Finding 3-Digit Even Numbers

Asked at Google

Array Hash Table Recursion Sorting Enumeration

#375

Rank

#728EasyFrequency: 22.1%

Self Dividing Numbers

Asked at Google

#376

Rank

#3600EasyFrequency: 22.1%

Find the K-th Character in String Game I

Asked at Google

Math Bit Manipulation Recursion Simulation

#377

Rank

#3790EasyFrequency: 22.1%

Fruits Into Baskets II

Asked at Google

Array Binary Search Segment Tree Simulation Ordered Set

#378

Rank

#2881EasyFrequency: 22%

Split Strings by Separator

Asked at Apple

#379

Rank

#1386EasyFrequency: 21.9%

Shift 2D Grid

Asked at Amazon

Array Matrix Simulation

#380

Rank

#1524EasyFrequency: 21.9%

String Matching in an Array

Asked at Amazon

Array String String Matching

#381

Rank

#1551EasyFrequency: 21.9%

NPV Queries

Asked at Amazon

#382

Rank

#1654EasyFrequency: 21.9%

Customer Order Frequency

Asked at Amazon

#383

Rank

#1755EasyFrequency: 21.9%

Defuse the Bomb

Asked at Amazon

Array Sliding Window

#384

Rank

#2561EasyFrequency: 21.9%

Number of Distinct Averages

Asked at Amazon

Array Hash Table Two Pointers Sorting

#385

Rank

#3183EasyFrequency: 21.9%

Find the K-or of an Array

Asked at Amazon

Array Bit Manipulation

#386

Rank

#3242EasyFrequency: 21.9%

Count Elements With Maximum Frequency

Asked at Amazon

Array Hash Table Counting

#387

Rank

#1975EasyFrequency: 21.9%

Minimum Distance to the Target Element

Asked at Amazon

#388

Rank

#461EasyFrequency: 21.5%

Hamming Distance

Asked at Meta

Bit Manipulation

#389

Rank

#1162EasyFrequency: 21.5%

Project Employees II

Asked at Meta

#390

Rank

#1215EasyFrequency: 21.5%

Reported Posts

Asked at Meta

#391

Rank

#1246EasyFrequency: 21.5%

User Activity for the Past 30 Days II

Asked at Meta

#392

Rank

#1377EasyFrequency: 21.5%

Number of Comments per Post

Asked at Meta

#393

Rank

#1453EasyFrequency: 21.5%

Ads Performance

Asked at Meta

#394

Rank

#1556EasyFrequency: 21.5%

Make Two Arrays Equal by Reversing Subarrays

Asked at Meta

Array Hash Table Sorting

#395

Rank

#195EasyFrequency: 21.5%

Tenth Line

Asked at Meta

#396

Rank

#2204EasyFrequency: 21.5%

Find Subsequence of Length K With the Largest Sum

Asked at Meta

Array Hash Table Sorting Heap (Priority Queue)

#397

Rank

#145EasyFrequency: 20.9%

Binary Tree Postorder Traversal

Asked at Google

Stack Tree Depth-First Search Binary Tree

#398

Rank

#979EasyFrequency: 20.9%

DI String Match

Asked at Google

Array Two Pointers String Greedy

#399

Rank

#1086EasyFrequency: 20.9%

Divisor Game

Asked at Google

Math Dynamic Programming Brainteaser Game Theory Impartial Game

#400

Rank

#1241EasyFrequency: 20.9%

Decompress Run-Length Encoded List

Asked at Google

#401

Rank

#1858EasyFrequency: 20.9%

Latest Time by Replacing Hidden Digits

Asked at Google

#402

Rank

#2219EasyFrequency: 20.9%

Maximum Number of Words Found in Sentences

Asked at Google

#403

Rank

#2733EasyFrequency: 20.9%

Sleep

Asked at Google

#404

Rank

#2127EasyFrequency: 20.9%

Employees Whose Manager Left the Company

Asked at Google

#405

Rank

#193EasyFrequency: 20.9%

Valid Phone Numbers

Asked at Google

#406

Rank

#2416EasyFrequency: 20.9%

Evaluate Boolean Binary Tree

Asked at Google

Tree Depth-First Search Binary Tree

#407

Rank

#2454EasyFrequency: 20.9%

Largest Local Values in a Matrix

Asked at Google

#408

Rank

#482EasyFrequency: 20.9%

License Key Formatting

Asked at Google

#409

Rank

#2820EasyFrequency: 20.9%

Return Length of Arguments Passed

Asked at Google

#410

Rank

#2714EasyFrequency: 20.9%

Left and Right Sum Differences

Asked at Google

Array Prefix Sum

#411

Rank

#2469EasyFrequency: 20.3%

Longest Subsequence With Limited Sum

Asked at Uber

Array Binary Search Greedy Sorting Prefix Sum

#412

Rank

#767EasyFrequency: 20%

Prime Number of Set Bits in Binary Representation

Asked at Amazon

Math Bit Manipulation Primality Test

#413

Rank

#1075EasyFrequency: 20%

Index Pairs of a String

Asked at Amazon

Array String Trie Sorting Aho–Corasick Algorithm

#414

Rank

#1082EasyFrequency: 20%

Sum of Digits in the Minimum Number

Asked at Amazon

#415

Rank

#1088EasyFrequency: 20%

Number of Days in a Month

Asked at Amazon

#416

Rank

#1089EasyFrequency: 20%

Remove Vowels from a String

Asked at Amazon

#417

Rank

#1090EasyFrequency: 20%

Armstrong Number

Asked at Amazon

#418

Rank

#1098EasyFrequency: 20%

Largest Unique Number

Asked at Amazon

Array Hash Table Sorting

#419

Rank

#1154EasyFrequency: 20%

Product Sales Analysis II

Asked at Amazon

#420

Rank

#1172EasyFrequency: 20%

Sales Analysis I

Asked at Amazon

#421

Rank

#1173EasyFrequency: 20%

Sales Analysis II

Asked at Amazon

#422

Rank

#1279EasyFrequency: 20%

Prime Arrangements

Asked at Amazon

Math Primality Test Sieve Theory Prime Number Sieve

#423

Rank

#1280EasyFrequency: 20%

Diet Plan Performance

Asked at Amazon

Array Sliding Window

#424

Rank

#1438EasyFrequency: 20%

Find the Team Size

Asked at Amazon

#425

Rank

#1481EasyFrequency: 20%

Students With Invalid Departments

Asked at Amazon

#426

Rank

#1639EasyFrequency: 20%

Friendly Movies Streamed Last Month

Asked at Amazon

#427

Rank

#1677EasyFrequency: 20%

Matrix Diagonal Sum

Asked at Amazon

#428

Rank

#1718EasyFrequency: 20%

Warehouse Manager

Asked at Amazon

#429

Rank

#1763EasyFrequency: 20%

All Valid Triplets That Can Represent a Country

Asked at Amazon

#430

Rank

#1892EasyFrequency: 20%

Find Total Time Spent by Each Employee

Asked at Amazon

#431

Rank

#1926EasyFrequency: 20%

Product's Price for Each Store

Asked at Amazon

#432

Rank

#1948EasyFrequency: 20%

Rearrange Products Table

Asked at Amazon

#433

Rank

#1958EasyFrequency: 20%

Ad-Free Sessions

Asked at Amazon

#434

Rank

#2112EasyFrequency: 20%

Minimum Difference Between Highest and Lowest of K Scores

Asked at Amazon

Array Sliding Window Sorting

#435

Rank

#2163EasyFrequency: 20%

Kth Distinct String in an Array

Asked at Amazon

Array Hash Table String Counting

#436

Rank

#2372EasyFrequency: 20%

Rearrange Characters to Make Target String

Asked at Amazon

Hash Table String Counting

#437

Rank

#2452EasyFrequency: 20%

Product Sales Analysis V

Asked at Amazon

#438

Rank

#2571EasyFrequency: 20%

Find the Pivot Integer

Asked at Amazon

Math Prefix Sum

#439

Rank

#2746EasyFrequency: 20%

Filter Elements from Array

Asked at Amazon

#440

Rank

#3045EasyFrequency: 20%

Minimum Right Shifts to Sort the Array

Asked at Amazon

#441

Rank

#3199EasyFrequency: 20%

Distribute Candies Among Children I

Asked at Amazon

Math Combinatorics Enumeration

#442

Rank

#3207EasyFrequency: 20%

Make Three Strings Equal

Asked at Amazon

#443

Rank

#3343EasyFrequency: 20%

Count Numbers With Unique Digits II

Asked at Amazon

Hash Table Math Dynamic Programming

#444

Rank

#3471EasyFrequency: 20%

Minimum Average of Smallest and Largest Elements

Asked at Amazon

Array Two Pointers Sorting

#445

Rank

#3506EasyFrequency: 20%

Count Triplets with Even XOR Set Bits I

Asked at Amazon

Array Bit Manipulation

#446

Rank

#3685EasyFrequency: 20%

Count Subarrays of Length Three With a Condition

Asked at Amazon

#447

Rank

#1811EasyFrequency: 20%

Fix Names in a Table

Asked at Amazon

#448

Rank

#4177EasyFrequency: 20%

Reverse String Prefix

Asked at Amazon

Two Pointers String

#449

Rank

#961EasyFrequency: 20%

Long Pressed Name

Asked at LinkedIn

Two Pointers String

#450

Rank

#604EasyFrequency: 19.5%

Design Compressed String Iterator

Asked at Google

Array String Design Iterator

#451

Rank

#734EasyFrequency: 19.5%

Sentence Similarity

Asked at Google

Array Hash Table String

#452

Rank

#799EasyFrequency: 19.5%

Minimum Distance Between BST Nodes

Asked at Google

Tree Depth-First Search Breadth-First Search Binary Search Tree Binary Tree

#453

Rank

#1039EasyFrequency: 19.5%

Find the Town Judge

Asked at Google

Array Hash Table Graph Theory

#454

Rank

#1115EasyFrequency: 19.5%

Valid Boomerang

Asked at Google

Array Math Geometry

#455

Rank

#1123EasyFrequency: 19.5%

Single-Row Keyboard

Asked at Google

Hash Table String

#456

Rank

#1444EasyFrequency: 19.5%

Number of Steps to Reduce a Number to Zero

Asked at Google

Math Bit Manipulation

#457

Rank

#2312EasyFrequency: 19.5%

Most Frequent Number Following Key In an Array

Asked at Google

Array Hash Table Counting

#458

Rank

#2377EasyFrequency: 19.5%

Check if Number Has Equal Digit Count and Digit Value

Asked at Google

Hash Table String Counting

#459

Rank

#2536EasyFrequency: 19.5%

Determine if Two Events Have Conflict

Asked at Google

#460

Rank

#2195EasyFrequency: 19.5%

Time Needed to Buy Tickets

Asked at Google

Array Queue Simulation

#461

Rank

#2384EasyFrequency: 19.5%

Root Equals Sum of Children

Asked at Google

Tree Binary Tree

#462

Rank

#2747EasyFrequency: 19.5%

Apply Transform Over Each Element in Array

Asked at Google

#463

Rank

#2812EasyFrequency: 19.5%

Find the Maximum Achievable Number

Asked at Google

#464

Rank

#953EasyFrequency: 19.5%

Reverse Only Letters

Asked at Google

Two Pointers String

#465

Rank

#3282EasyFrequency: 19.5%

Calculate Compressed Mean

Asked at Google

#466

Rank

#3284EasyFrequency: 19.5%

Find Expensive Cities

Asked at Google

#467

Rank

#3287EasyFrequency: 19.5%

Loan Types

Asked at Google

#468

Rank

#3311EasyFrequency: 19.5%

Ant on the Boundary

Asked at Google

Array Simulation Prefix Sum

#469

Rank

#3172EasyFrequency: 19.5%

Divisible and Non-divisible Sums Difference

Asked at Google

#470

Rank

#1656EasyFrequency: 19.5%

Count Good Triplets

Asked at Google

Array Enumeration

#471

Rank

#3626EasyFrequency: 19.5%

Smallest Divisible Digit Product I

Asked at Google

Math Enumeration

#472

Rank

#3753EasyFrequency: 19.5%

Maximum Difference Between Even and Odd Frequency I

Asked at Microsoft

Hash Table String Counting

#473

Rank

#1458EasyFrequency: 19.5%

Sort Integers by The Number of 1 Bits

Asked at Microsoft

Array Bit Manipulation Sorting Counting

#474

Rank

#2704EasyFrequency: 19.4%

Maximum Difference by Remapping a Digit

Asked at Meta

#475

Rank

#749EasyFrequency: 18%

Shortest Completing Word

Asked at Google

Array Hash Table String

#476

Rank

#762EasyFrequency: 18%

Find Anagram Mappings

Asked at Google

Array Hash Table

#477

Rank

#857EasyFrequency: 18%

Positions of Large Groups

Asked at Google

#478

Rank

#1069EasyFrequency: 18%

Confusing Number

Asked at Google

#479

Rank

#1714EasyFrequency: 18%

Rearrange Spaces Between Words

Asked at Google

#480

Rank

#2341EasyFrequency: 18%

Count Prefixes of a Given String

Asked at Google

#481

Rank

#2401EasyFrequency: 18%

Count Asterisks

Asked at Google

#482

Rank

#2447EasyFrequency: 18%

Merge Similar Items

Asked at Google

Array Hash Table Sorting Ordered Set

#483

Rank

#2528EasyFrequency: 18%

Number of Valid Clock Times

Asked at Google

String Enumeration

#484

Rank

#2789EasyFrequency: 18%

Counter II

Asked at Google

#485

Rank

#816EasyFrequency: 18%

Design HashSet

Asked at Google

Array Hash Table Linked List Design Hash Function

#486

Rank

#924EasyFrequency: 18%

Fair Candy Swap

Asked at Google

Array Hash Table Binary Search Sorting

#487

Rank

#1406EasyFrequency: 18%

Subtract the Product and Sum of Digits of an Integer

Asked at Google

#488

Rank

#3194EasyFrequency: 18%

Find Words Containing Character

Asked at Google

#489

Rank

#2491EasyFrequency: 18%

Smallest Even Multiple

Asked at Amazon

Math Number Theory

#490

Rank

#2551EasyFrequency: 18%

Apply Operations to an Array

Asked at Amazon

Array Two Pointers Simulation

#491

Rank

#3799EasyFrequency: 18%

Unique 3-Digit Even Numbers

Asked at Amazon

Array Hash Table Recursion Enumeration

#492

Rank

#3651EasyFrequency: 18%

Transformed Array

Asked at Amazon

Array Simulation

#493

Rank

#1542EasyFrequency: 17%

Consecutive Characters

Asked at Meta

#494

Rank

#566EasyFrequency: 17%

Reshape the Matrix

Asked at Meta

Array Matrix Simulation

#495

Rank

#3372EasyFrequency: 17%

Longest Strictly Increasing or Strictly Decreasing Subarray

Asked at Meta

#496

Rank

#2277EasyFrequency: 17%

Count Equal and Divisible Pairs in an Array

Asked at Meta

#497

Rank

#3349EasyFrequency: 17%

Maximum Length Substring With Two Occurrences

Asked at Meta

Hash Table String Sliding Window

#498

Rank

#293EasyFrequency: 16.4%

Flip Game

Asked at Google

#499

Rank

#422EasyFrequency: 16.4%

Valid Word Square

Asked at Google

#500

Rank

#521EasyFrequency: 16.4%

Longest Uncommon Subsequence I

Asked at Google

#501

Rank

#818EasyFrequency: 16.4%

Similar RGB Color

Asked at Google

Math String Enumeration

#502

Rank

#1156EasyFrequency: 16.4%

Occurrences After Bigram

Asked at Google

#503

Rank

#1210EasyFrequency: 16.4%

Mean of Array After Removing Some Elements

Asked at Google

#504

Rank

#1287EasyFrequency: 16.4%

Distance Between Bus Stops

Asked at Google

#505

Rank

#1847EasyFrequency: 16.4%

Largest Subarray Length K

Asked at Google

#506

Rank

#1974EasyFrequency: 16.4%

Find Customers With Positive Revenue this Year

Asked at Google

#507

Rank

#2345EasyFrequency: 16.4%

Minimum Number of Operations to Convert Time

Asked at Google

#508

Rank

#2843EasyFrequency: 16.4%

Extract Kth Character From The Rope Tree

Asked at Google

Tree Depth-First Search Binary Tree

#509

Rank

#2875EasyFrequency: 16.4%

Count Houses in a Circular Street

Asked at Google

Array Interactive

#510

Rank

#3188EasyFrequency: 16.4%

Find Champion I

Asked at Google

#511

Rank

#3361EasyFrequency: 16.4%

Latest Time You Can Obtain After Replacing Characters

Asked at Google

String Enumeration

#512

Rank

#2181EasyFrequency: 16.4%

Smallest Index With Equal Value

Asked at Google

#513

Rank

#2226EasyFrequency: 16.4%

Rings and Rods

Asked at Google

Hash Table String

#514

Rank

#2346EasyFrequency: 16.4%

Largest 3-Same-Digit Number in String

Asked at Google

#515

Rank

#2495EasyFrequency: 16.4%

Number of Unique Subjects Taught by Each Teacher

Asked at Google

#516

Rank

#2507EasyFrequency: 16.4%

Number of Common Factors

Asked at Google

Math Enumeration Number Theory Euclidean Algorithm Greatest Common Divisor

#517

Rank

#500EasyFrequency: 16.4%

Keyboard Row

Asked at Google

Array Hash Table String

#518

Rank

#1217EasyFrequency: 16.4%

Relative Sort Array

Asked at Google

Array Hash Table Sorting Counting Sort Quicksort Bubble Sort

#519

Rank

#1954EasyFrequency: 16.4%

Replace All Digits with Characters

Asked at Google

#520

Rank

#1877EasyFrequency: 16.4%

Find Followers Count

Asked at Google

#521

Rank

#1018EasyFrequency: 16.4%

Largest Perimeter Triangle

Asked at Google

Array Math Greedy Sorting Quicksort Polygons

#522

Rank

#1001EasyFrequency: 16.4%

N-Repeated Element in Size 2N Array

Asked at Google

Array Hash Table Pigeonhole Principle

#523

Rank

#693EasyFrequency: 16.4%

Binary Number with Alternating Bits

Asked at Google

Bit Manipulation

#524

Rank

#2037EasyFrequency: 16.4%

Count Square Sum Triples

Asked at Google

Math Enumeration

#525

Rank

#3995EasyFrequency: 16.4%

GCD of Odd and Even Sums

Asked at Google

Math Number Theory

#526

Rank

#3555EasyFrequency: 16.1%

Final Array State After K Multiplication Operations I

Asked at Microsoft

Array Math Heap (Priority Queue)Simulation

#527

Rank

#2614EasyFrequency: 16.1%

Maximum Count of Positive Integer and Negative Integer

Asked at Microsoft

Array Binary Search Counting

#528

Rank

#2998EasyFrequency: 16.1%

Count Symmetric Integers

Asked at Microsoft

Math Enumeration

#529

Rank

#1970EasyFrequency: 16.1%

Sorting the Sentence

Asked at Microsoft

String Sorting Bubble Sort

#530

Rank

#841EasyFrequency: 16.1%

Shortest Distance to a Character

Asked at Microsoft

Array Two Pointers String

#531

Rank

#1448EasyFrequency: 16.1%

Maximum 69 Number

Asked at Microsoft

#532

Rank

#3676EasyFrequency: 16.1%

Smallest Number With All Set Bits

Asked at Microsoft

Math Bit Manipulation

#533

Rank

#3074EasyFrequency: 16.1%

Select Data

Asked at Microsoft

#534

Rank

#1297EasyFrequency: 16.1%

Maximum Number of Balloons

Asked at Microsoft

Hash Table String Counting

#535

Rank

#3226EasyFrequency: 16.1%

Minimum Number Game

Asked at Microsoft

Array Sorting Heap (Priority Queue)Simulation

#536

Rank

#1035EasyFrequency: 15.7%

Cousins in Binary Tree

Asked at Amazon

Tree Depth-First Search Breadth-First Search Binary Tree

#537

Rank

#1353EasyFrequency: 15.7%

Find Resultant Array After Removing Anagrams

Asked at Amazon

Array Hash Table String Sorting

#538

Rank

#2144EasyFrequency: 15.7%

Maximum Difference Between Increasing Elements

Asked at Amazon

#539

Rank

#2248EasyFrequency: 15.7%

Minimum Cost of Buying Candies With Discount

Asked at Amazon

Array Greedy Sorting

#540

Rank

#3965EasyFrequency: 15.7%

Earliest Finish Time for Land and Water Rides I

Asked at Amazon

Array Two Pointers Binary Search Greedy Sorting

#541

Rank

#1054EasyFrequency: 14.6%

Complement of Base 10 Integer

Asked at Google

Bit Manipulation

#542

Rank

#2106EasyFrequency: 14.6%

Find Greatest Common Divisor of Array

Asked at Google

Array Math Number Theory Euclidean Algorithm Greatest Common Divisor

#543

Rank

#1786EasyFrequency: 14.6%

Count the Number of Consistent Strings

Asked at Google

Array Hash Table String Bit Manipulation Counting

#544

Rank

#1302EasyFrequency: 14.6%

Delete Characters to Make Fancy String

Asked at Google

#545

Rank

#2692EasyFrequency: 14.6%

Take Gifts From the Richest Pile

Asked at Google

Array Heap (Priority Queue)Simulation

#546

Rank

#1260EasyFrequency: 14.6%

Day of the Year

Asked at Google

#547

Rank

#2463EasyFrequency: 14.6%

Minimum Recolors to Get K Consecutive Black Blocks

Asked at Google

String Sliding Window

#548

Rank

#1500EasyFrequency: 14.6%

Count Largest Group

Asked at Google

Hash Table Math Counting

#549

Rank

#3859EasyFrequency: 14.6%

Maximum Product of Two Digits

Asked at Google

#550

Rank

#899EasyFrequency: 14.6%

Binary Gap

Asked at Google

Bit Manipulation

#551

Rank

#1548EasyFrequency: 14.6%

Check If All 1's Are at Least Length K Places Away

Asked at Google

#552

Rank

#3846EasyFrequency: 14.6%

Minimum Operations to Make Array Sum Divisible by K

Asked at Google

#553

Rank

#904EasyFrequency: 14.4%

Leaf-Similar Trees

Asked at Meta

Tree Depth-First Search Binary Tree

#554

Rank

#1293EasyFrequency: 14.4%

Three Consecutive Odds

Asked at Meta

#555

Rank

#742EasyFrequency: 14.4%

To Lower Case

Asked at Meta

#556

Rank

#3872EasyFrequency: 14.4%

Find Most Frequent Vowel and Consonant

Asked at Meta

Hash Table String Counting

#557

Rank

#3910EasyFrequency: 14.4%

Find Books with No Available Copies

Asked at Meta

#558

Rank

#2128EasyFrequency: 13.2%

Reverse Prefix of Word

Asked at Amazon

Two Pointers String Stack

#559

Rank

#2350EasyFrequency: 13.2%

Find Closest Number to Zero

Asked at Amazon

#560

Rank

#2556EasyFrequency: 13.2%

Convert the Temperature

Asked at Amazon

#561

Rank

#599EasyFrequency: 13.2%

Minimum Index Sum of Two Lists

Asked at Amazon

Array Hash Table String

#562

Rank

#619EasyFrequency: 13.2%

Biggest Single Number

Asked at Amazon

#563

Rank

#3617EasyFrequency: 13.2%

Find the Original Typed String I

Asked at Amazon

#564

Rank

#1664EasyFrequency: 12.6%

Find Users With Valid E-Mails

Asked at Google

#565

Rank

#2859EasyFrequency: 12.6%

Add Two Promises

Asked at Google

#566

Rank

#3076EasyFrequency: 12.6%

Get the Size of a DataFrame

Asked at Google

#567

Rank

#1625EasyFrequency: 12.6%

Group Sold Products By The Date

Asked at Google

#568

Rank

#2199EasyFrequency: 12.6%

Two Furthest Houses With Different Colors

Asked at Google

#569

Rank

#2024EasyFrequency: 12.6%

Calculate Special Bonus

Asked at Google

#570

Rank

#2288EasyFrequency: 12.6%

Count Operations to Obtain Zero

Asked at Google

Math Simulation

#571

Rank

#3581EasyFrequency: 12.6%

The Two Sneaky Numbers of Digitville

Asked at Google

Array Hash Table Math

#572

Rank

#2274EasyFrequency: 12.6%

Keep Multiplying Found Values by Two

Asked at Google

Array Hash Table Sorting Simulation

#573

Rank

#2323EasyFrequency: 12%

Minimum Bit Flips to Convert Number

Asked at Microsoft

Bit Manipulation

#574

Rank

#1806EasyFrequency: 12%

Count of Matches in Tournament

Asked at Microsoft

Math Simulation

#575

Rank

#627EasyFrequency: 12%

Swap Sex of Employees

Asked at Microsoft

#576

Rank

#3621EasyFrequency: 12%

Minimum Operations to Make Array Values Equal to K

Asked at Microsoft

Array Hash Table

#577

Rank

#3747EasyFrequency: 12%

Maximum Difference Between Adjacent Elements in a Circular Array

Asked at Microsoft

#578

Rank

#1264EasyFrequency: 12%

Maximum Number of Words You Can Type

Asked at Microsoft

Hash Table String

#579

Rank

#1987EasyFrequency: 12%

Substrings of Size Three with Distinct Characters

Asked at Microsoft

Hash Table String Sliding Window Counting

#580

Rank

#3606EasyFrequency: 12%

Minimum Element After Replacement With Digit Sum

Asked at Microsoft

#581

Rank

#1720EasyFrequency: 11.4%

Crawler Log Folder

Asked at Meta

Array String Stack

#582

Rank

#3221EasyFrequency: 11.4%

Find the Peaks

Asked at Meta

Array Enumeration

#583

Rank

#3428EasyFrequency: 11.4%

Find the XOR of Numbers Which Appear Twice

Asked at Meta

Array Hash Table Bit Manipulation

#584

Rank

#933EasyFrequency: 10.5%

Increasing Order Search Tree

Asked at Google

Stack Tree Depth-First Search Binary Search Tree Binary Tree

#585

Rank

#2532EasyFrequency: 10.5%

Remove Letter To Equalize Frequency

Asked at Google

Hash Table String Counting

#586

Rank

#2741EasyFrequency: 10.5%

Function Composition

Asked at Google

#587

Rank

#2796EasyFrequency: 10.5%

Allow One Function Call

Asked at Google

#588

Rank

#920EasyFrequency: 10.5%

Uncommon Words from Two Sentences

Asked at Google

Hash Table String Counting

#589

Rank

#2800EasyFrequency: 10.5%

Minimum String Length After Removing Substrings

Asked at Google

String Stack Simulation

#590

Rank

#2860EasyFrequency: 10.5%

Sort By

Asked at Google

#591

Rank

#1005EasyFrequency: 10.5%

Univalued Binary Tree

Asked at Google

Tree Depth-First Search Breadth-First Search Binary Tree

#592

Rank

#1670EasyFrequency: 10.5%

Patients With a Condition

Asked at Google

#593

Rank

#1041EasyFrequency: 10.5%

Available Captures for Rook

Asked at Google

Array Matrix Simulation

#594

Rank

#492EasyFrequency: 10.5%

Construct the Rectangle

Asked at Google

#595

Rank

#3206EasyFrequency: 10.5%

Find Common Elements Between Two Arrays

Asked at Google

Array Hash Table

#596

Rank

#717EasyFrequency: 10.5%

1-bit and 2-bit Characters

Asked at Google

#597

Rank

#2892EasyFrequency: 10.5%

Check if Array is Good

Asked at Google

Array Hash Table Sorting

#598

Rank

#1547EasyFrequency: 10.3%

Destination City

Asked at Amazon

Array Hash Table String

#599

Rank

#2020EasyFrequency: 10.3%

Remove One Element to Make the Array Strictly Increasing

Asked at Amazon

#600

Rank

#776EasyFrequency: 10.3%

N-ary Tree Postorder Traversal

Asked at Amazon

Stack Tree Depth-First Search

#601

Rank

#1519EasyFrequency: 10.3%

Minimum Subsequence in Non-Increasing Order

Asked at Amazon

Array Greedy Sorting

#602

Rank

#495EasyFrequency: 10.3%

Teemo Attacking

Asked at Amazon

Array Simulation

#603

Rank

#3463EasyFrequency: 10.3%

Alternating Groups I

Asked at Amazon

Array Sliding Window

#604

Rank

#2102EasyFrequency: 10.3%

Find the Middle Index in Array

Asked at Amazon

Array Prefix Sum

#605

Rank

#434EasyFrequency: 10.3%

Number of Segments in a String

Asked at Amazon

#606

Rank

#2575EasyFrequency: 10.3%

Minimum Cuts to Divide a Circle

Asked at Amazon

#607

Rank

#2238EasyFrequency: 10.3%

A Number After a Double Reversal

Asked at Amazon

#608

Rank

#3616EasyFrequency: 10.3%

Make Array Elements Equal to Zero

Asked at Amazon

Array Simulation Prefix Sum

#609

Rank

#2608EasyFrequency: 10.3%

Count the Digits That Divide a Number

Asked at Amazon

#610

Rank

#3605EasyFrequency: 10.3%

Construct the Minimum Bitwise Array I

Asked at Amazon

Array Bit Manipulation

#611

Rank

#1910EasyFrequency: 10.3%

Check if Binary String Has at Most One Segment of Ones

Asked at Amazon

#612

Rank

#1837EasyFrequency: 10.3%

Daily Leads and Partners

Asked at Amazon

#613

Rank

#1274EasyFrequency: 8.1%

Number of Days Between Two Dates

Asked at Google

#614

Rank

#2486EasyFrequency: 8.1%

Most Frequent Even Element

Asked at Google

Array Hash Table Counting

#615

Rank

#476EasyFrequency: 8.1%

Number Complement

Asked at Google

Bit Manipulation

#616

Rank

#3476EasyFrequency: 8.1%

Find Minimum Operations to Make All Elements Divisible by Three

Asked at Google

#617

Rank

#3582EasyFrequency: 8.1%

Find Indices of Stable Mountains

Asked at Google

#618

Rank

#1764EasyFrequency: 8.1%

Maximum Repeating Substring

Asked at Google

String Dynamic Programming String Matching

#619

Rank

#2398EasyFrequency: 8.1%

Check if Matrix Is X-Matrix

Asked at Google

#620

Rank

#2041EasyFrequency: 8.1%

The Latest Login in 2020

Asked at Google

#621

Rank

#2406EasyFrequency: 8.1%

Decode the Message

Asked at Google

Hash Table String

#622

Rank

#3702EasyFrequency: 8.1%

Maximum Subarray With Equal Products

Asked at Google

Array Math Sliding Window Enumeration Number Theory

#623

Rank

#3704EasyFrequency: 8.1%

Count Partitions with Even Sum Difference

Asked at Google

Array Math Prefix Sum

#624

Rank

#3731EasyFrequency: 8.1%

Sum of Variable Length Subarrays

Asked at Google

Array Prefix Sum

#625

Rank

#3065EasyFrequency: 8%

Display the First Three Rows

Asked at Meta

#626

Rank

#2821EasyFrequency: 8%

Timeout Cancellation

Asked at Meta

#627

Rank

#607EasyFrequency: 8%

Sales Person

Asked at Meta

#628

Rank

#2866EasyFrequency: 8%

Longest Even Odd Subarray With Threshold

Asked at Meta

Array Sliding Window

#629

Rank

#1884EasyFrequency: 8%

Minimum Changes To Make Alternating Binary String

Asked at Meta

#630

Rank

#3019EasyFrequency: 8%

Furthest Point From Origin

Asked at Meta

String Counting

#631

Rank

#3371EasyFrequency: 7.3%

Harshad Number

Asked at Microsoft

#632

Rank

#1566EasyFrequency: 7.3%

Check If a Word Occurs As a Prefix of Any Word in a Sentence

Asked at Microsoft

Two Pointers String String Matching

#633

Rank

#2761EasyFrequency: 7.3%

Array Reduce Transformation

Asked at Microsoft

#634

Rank

#2122EasyFrequency: 7.3%

Count Special Quadruplets

Asked at Microsoft

Array Hash Table Enumeration

#635

Rank

#3176EasyFrequency: 7.3%

Minimum Sum of Mountain Triplets I

Asked at Microsoft

#636

Rank

#2283EasyFrequency: 7.3%

Sort Even and Odd Indices Independently

Asked at Microsoft

#637

Rank

#1071EasyFrequency: 7.3%

Binary Prefix Divisible By 5

Asked at Microsoft

Array Bit Manipulation

#638

Rank

#2876EasyFrequency: 7.3%

Number of Employees Who Met the Target

Asked at Microsoft

#639

Rank

#4186EasyFrequency: 7.3%

Count Residue Prefixes

Asked at Microsoft

Hash Table String

#640

Rank

#2863EasyFrequency: 7.3%

Calculator with Method Chaining

Asked at Microsoft

#641

Rank

#1746EasyFrequency: 7.3%

Largest Substring Between Two Equal Characters

Asked at Microsoft

Hash Table String

#642

Rank

#2391EasyFrequency: 7.3%

Strong Password Checker II

Asked at Microsoft

#643

Rank

#2999EasyFrequency: 7.3%

Check if Strings Can be Made Equal With Operations I

Asked at Microsoft

#644

Rank

#1904EasyFrequency: 7.3%

Second Largest Digit in a String

Asked at Microsoft

Hash Table String

#645

Rank

#4008EasyFrequency: 7.3%

Restore Finishing Order

Asked at Microsoft

Array Hash Table

#646

Rank

#2752EasyFrequency: 7.3%

Sum Multiples

Asked at Microsoft

#647

Rank

#3070EasyFrequency: 7.3%

Fill Missing Data

Asked at Microsoft

#648

Rank

#2777EasyFrequency: 7.3%

Find the Distinct Difference Array

Asked at Microsoft

Array Hash Table

#649

Rank

#3154EasyFrequency: 7.3%

Maximum Value of an Ordered Triplet I

Asked at Microsoft

Array Prefix Sum

#650

Rank

#1349EasyFrequency: 7.2%

Check If It Is a Straight Line

Asked at Amazon

Array Math Geometry

#651

Rank

#1769EasyFrequency: 7.2%

Get Maximum in Generated Array

Asked at Amazon

Array Simulation

#652

Rank

#2148EasyFrequency: 7.2%

Minimum Number of Moves to Seat Everyone

Asked at Amazon

Array Greedy Sorting Counting Sort

#653

Rank

#2624EasyFrequency: 7.2%

Difference Between Element Sum and Digit Sum of an Array

Asked at Amazon

#654

Rank

#3553EasyFrequency: 7.2%

Check if Two Chessboard Squares Have the Same Color

Asked at Amazon

#655

Rank

#775EasyFrequency: 7.2%

N-ary Tree Preorder Traversal

Asked at Amazon

Stack Tree Depth-First Search

#656

Rank

#563EasyFrequency: 7.2%

Binary Tree Tilt

Asked at Amazon

Tree Depth-First Search Binary Tree DP on Trees

#657

Rank

#928EasyFrequency: 7.2%

Surface Area of 3D Shapes

Asked at Amazon

Array Math Geometry Matrix

#658

Rank

#2053EasyFrequency: 7.2%

Check if All Characters Have Equal Number of Occurrences

Asked at Amazon

Hash Table String Counting

#659

Rank

#2005EasyFrequency: 7.2%

Check if All the Integers in a Range Are Covered

Asked at Amazon

Array Hash Table Prefix Sum

#660

Rank

#3636EasyFrequency: 7.2%

Check Balanced String

Asked at Amazon

#661

Rank

#774EasyFrequency: 7.2%

Maximum Depth of N-ary Tree

Asked at Amazon

Tree Depth-First Search Breadth-First Search

#662

Rank

#3830EasyFrequency: 7.2%

Find Closest Person

Asked at Amazon

#663

Rank

#2630EasyFrequency: 7.2%

Alternating Digit Sum

Asked at Amazon

#664

Rank

#824EasyFrequency: 5.5%

Number of Lines To Write String

Asked at Google

#665

Rank

#1734EasyFrequency: 5.5%

Bank Account Summary II

Asked at Google

#666

Rank

#2727EasyFrequency: 5.5%

Number of Senior Citizens

Asked at Google

#667

Rank

#3055EasyFrequency: 5.5%

Maximum Odd Binary Number

Asked at Google

Math String Greedy

#668

Rank

#2154EasyFrequency: 5.5%

Minimum Moves to Convert String

Asked at Google

#669

Rank

#919EasyFrequency: 5.5%

Projection Area of 3D Shapes

Asked at Google

Array Math Geometry Matrix

#670

Rank

#1505EasyFrequency: 5.5%

Create Target Array in the Given Order

Asked at Google

Array Simulation

#671

Rank

#1289EasyFrequency: 5.5%

Day of the Week

Asked at Google

#672

Rank

#1823EasyFrequency: 5.5%

Determine if String Halves Are Alike

Asked at Google

String Counting

#673

Rank

#3568EasyFrequency: 5.5%

Find the Key of the Numbers

Asked at Google

#674

Rank

#1797EasyFrequency: 5.5%

Goal Parser Interpretation

Asked at Google

#675

Rank

#3064EasyFrequency: 5.5%

Reshape Data: Concatenate

Asked at Google

#676

Rank

#2775EasyFrequency: 5.5%

Generate Fibonacci Sequence

Asked at Google

#677

Rank

#1541EasyFrequency: 5.5%

Top Travellers

Asked at Google

#678

Rank

#2260EasyFrequency: 5.5%

Divide a String Into Groups of Size k

Asked at Google

String Simulation

#679

Rank

#1490EasyFrequency: 5.5%

Generate a String With Characters That Have Odd Counts

Asked at Google

#680

Rank

#2585EasyFrequency: 5.5%

Delete Greatest Value in Each Row

Asked at Google

Array Sorting Heap (Priority Queue)Matrix Simulation

#681

Rank

#3708EasyFrequency: 5.5%

Zigzag Grid Traversal With Skip

Asked at Google

Array Matrix Simulation

#682

Rank

#3251EasyFrequency: 5.5%

Maximum Area of Longest Diagonal Rectangle

Asked at Google

#683

Rank

#3519EasyFrequency: 5.5%

Find the Number of Winning Players

Asked at Google

Array Hash Table Counting

#684

Rank

#2825EasyFrequency: 5.5%

Minimize String Length

Asked at Google

Hash Table String

#685

Rank

#2269EasyFrequency: 5.5%

Count Elements With Strictly Smaller and Greater Elements

Asked at Google

Array Sorting Counting

#686

Rank

#1610EasyFrequency: 5.5%

XOR Operation in an Array

Asked at Google

Math Bit Manipulation

#687

Rank

#2659EasyFrequency: 5.5%

Number of Even and Odd Bits

Asked at Google

Bit Manipulation

#688

Rank

#3934EasyFrequency: 5.5%

Coupon Code Validator

Asked at Google

Array Hash Table String Sorting

#689

Rank

#944EasyFrequency: 5.5%

Smallest Range I

Asked at Google

#690

Rank

#3811EasyFrequency: 5.5%

Reverse Degree of a String

Asked at Google

String Simulation

#691

Rank

#3973EasyFrequency: 5.5%

Flip Square Submatrix Vertically

Asked at Google

Array Two Pointers Matrix

#692

Rank

#4256EasyFrequency: 5.5%

Construct Uniform Parity Array I

Asked at Google

#693

Rank

#4168EasyFrequency: 5.5%

Mirror Distance of an Integer

Asked at Google

#694

Rank

#4216EasyFrequency: 5.5%

Weighted Word Mapping

Asked at Google

Array String Simulation

#695

Rank

#822EasyFrequency: 5.5%

Unique Morse Code Words

Asked at Google

Array Hash Table String

#696

Rank

#2715EasyFrequency: 5.5%

K Items With the Maximum Sum

Asked at Google

#697

Rank

#4354EasyFrequency: 5.5%

Unique Middle Element

Asked at Google

#698

Rank

#2645EasyFrequency: 5%

Pass the Pillow

Asked at Google

Math Simulation

#699

Rank

#2442EasyFrequency: 5%

Number of Arithmetic Triplets

Asked at Google

Array Hash Table Two Pointers Enumeration

#700

Rank

#3533EasyFrequency: 5%

Snake in Matrix

Asked at Google

Array String Simulation

#701

Rank

#3069EasyFrequency: 5%

Change Data Type

Asked at Google

#702

Rank

#1378EasyFrequency: 5%

Cells with Odd Values in a Matrix

Asked at Google

Array Math Simulation

#703

Rank

#3309EasyFrequency: 5%

Count Prefix and Suffix Pairs I

Asked at Google

Array String Trie Rolling Hash String Matching Hash Function

#704

Rank

#2412EasyFrequency: 5%

Minimum Amount of Time to Fill Cups

Asked at Google

Array Greedy Sorting Heap (Priority Queue)

#705

Rank

#2864EasyFrequency: 5%

Is Object Empty

Asked at Google

#706

Rank

#2722EasyFrequency: 5%

Prime In Diagonal

Asked at Google

Array Math Matrix Number Theory

#707

Rank

#3723EasyFrequency: 5%

Sum of Good Numbers

Asked at Google

#708

Rank

#575EasyFrequency: 5%

Distribute Candies

Asked at Google

Array Hash Table

#709

Rank

#3324EasyFrequency: 5%

Split the Array

Asked at Google

Array Hash Table Counting

#710

Rank

#2798EasyFrequency: 5%

Chunk Array

Asked at Google

#711

Rank

#1472EasyFrequency: 5%

Increasing Decreasing String

Asked at Google

Hash Table String Counting

#712

Rank

#1965EasyFrequency: 5%

Sum of Digits in Base K

Asked at Google

#713

Rank

#2748EasyFrequency: 5%

Calculate Delayed Arrival Time

Asked at Google

#714

Rank

#3817EasyFrequency: 5%

Maximum Containers on a Ship

Asked at Google

#715

Rank

#3705EasyFrequency: 5%

Find the Largest Almost Missing Integer

Asked at Google

Array Hash Table

#716

Rank

#3869EasyFrequency: 5%

Smallest Index With Digit Sum Equal to Index

Asked at Google

#717

Rank

#2844EasyFrequency: 5%

Sum of Squares of Special Elements

Asked at Google

Array Enumeration

#718

Rank

#2589EasyFrequency: 5%

Maximum Value of a String in an Array

Asked at Google

#719

Rank

#1430EasyFrequency: 5%

Find the K-Beauty of a Number

Asked at Google

Math String Sliding Window

#720

Rank

#4115EasyFrequency: 5%

Minimum Distance Between Three Equal Elements I

Asked at Google

Array Hash Table

#721

Rank

#4275EasyFrequency: 5%

Traffic Signal Color

Asked at Google

Math String Simulation

#722

Rank

#2480EasyFrequency: 5%

Find Subarrays With Equal Sum

Asked at Google

Array Hash Table

#723

Rank

#3163EasyFrequency: 5%

Subarrays Distinct Element Sum of Squares I

Asked at Google

Array Hash Table Segment Tree

#724

Rank

#2756EasyFrequency: 5%

Buy Two Chocolates

Asked at Google

Array Greedy Sorting

#725

Rank

#2542EasyFrequency: 5%

Average Value of Even Numbers That Are Divisible by Three

Asked at Google

#726

Rank

#1839EasyFrequency: 5%

Decode XORed Array

Asked at Google

Array Bit Manipulation

#727

Rank

#4150EasyFrequency: 5%

Sort Integers by Binary Reflection

Asked at Google

#728

Rank

#2110EasyFrequency: 5%

Employees With Missing Information

Asked at Google

#729

Rank

#3312EasyFrequency: 5%

Number of Changing Keys

Asked at Amazon

#730

Rank

#3072EasyFrequency: 5%

Reshape Data: Pivot

Asked at Amazon

#731

Rank

#3632EasyFrequency: 5%

Button with Longest Push Time

Asked at Amazon

#732

Rank

#3709EasyFrequency: 5%

Find Special Substring of Length K

Asked at Amazon

#733

Rank

#1180EasyFrequency: 5%

Game Play Analysis II

Asked at Amazon

#734

Rank

#3073EasyFrequency: 5%

Reshape Data: Melt

Asked at Amazon

#735

Rank

#3426EasyFrequency: 5%

Minimum Number of Chairs in a Waiting Room

Asked at Amazon

String Simulation

#736

Rank

#2698EasyFrequency: 5%

Find the Array Concatenation Value

Asked at Amazon

Array Two Pointers Simulation

#737

Rank

#598EasyFrequency: 5%

Range Addition II

Asked at Amazon

#738

Rank

#2459EasyFrequency: 5%

Minimum Hours of Training to Win a Competition

Asked at Amazon

#739

Rank

#1164EasyFrequency: 5%

Missing Number In Arithmetic Progression

Asked at Amazon

#740

Rank

#2857EasyFrequency: 5%

Total Distance Traveled

Asked at Amazon

Math Simulation

#741

Rank

#2476EasyFrequency: 5%

Check Distances Between Same Letters

Asked at Amazon

Array Hash Table String

#742

Rank

#2816EasyFrequency: 5%

Lexicographically Smallest Palindrome

Asked at Amazon

Two Pointers String Greedy

#743

Rank

#4299EasyFrequency: 5%

Concatenate Array With Reverse

Asked at Amazon

Array Simulation

#744

Rank

#4039EasyFrequency: 5%

Compute Decimal Representation

Asked at Meta

#745

Rank

#1775EasyFrequency: 5%

Design an Ordered Stream

Asked at Meta

Array Hash Table Design Data Stream

#746

Rank

#4312EasyFrequency: 5%

Limit Occurrences in Sorted Array

Asked at Meta

Array Two Pointers

#747

Rank

#1944EasyFrequency: 5%

Truncate Sentence

Asked at Meta

#748

Rank

View All Companies

Need help during your interview?

Get AI-powered real-time assistance with Interview Solver—live hints, solutions, and explanations during your actual coding interviews.

Try Interview Solver