Easy LeetCode Interview Questions

Two Pointers String Greedy

Rank

#680EasyFrequency: 95%

Valid Palindrome II

Asked at Meta

Rank

#415EasyFrequency: 94%

Add Strings

Asked at Oracle

Math String Simulation

Rank

#234EasyFrequency: 93%

Palindrome Linked List

Asked at Databricks

Linked List Two Pointers Stack Recursion

Rank

#88EasyFrequency: 92%

Merge Sorted Array

Asked at Microsoft

Rank

#20EasyFrequency: 90%

Valid Parentheses

Asked at Airbnb

#10

Rank

#121EasyFrequency: 89%

Best Time to Buy and Sell Stock

Asked at Apple

#11

Rank

#136EasyFrequency: 89%

Single Number

Asked at Flipkart

Array Bit Manipulation

#12

Rank

#408EasyFrequency: 87%

Valid Word Abbreviation

Asked at Meta

#13

Rank

#1019EasyFrequency: 85%

Squares of a Sorted Array

Asked at Salesforce

Hash Table String Queue Counting

#14

Rank

#387EasyFrequency: 83%

First Unique Character in a String

Asked at Oracle

#15

Rank

#1908EasyFrequency: 82%

Recyclable and Low Fat Products

Asked at Salesforce

Database

#16

Rank

#141EasyFrequency: 82%

Linked List Cycle

Asked at Flipkart

Hash Table Linked List Two Pointers

#17

Rank

#733EasyFrequency: 81%

Flood Fill

Asked at Infosys

Array Depth-First Search Breadth-First Search Matrix

#18

Rank

#1894EasyFrequency: 80%

Merge Strings Alternately

Asked at Google

#19

Rank

#1566EasyFrequency: 80%

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

Asked at Salesforce

#20

Rank

#27EasyFrequency: 80%

Remove Element

Asked at Flipkart

Tree Depth-First Search Breadth-First Search Binary Tree

#21

Rank

#104EasyFrequency: 80%

Maximum Depth of Binary Tree

Asked at Flipkart

#22

Rank

#70EasyFrequency: 79%

Climbing Stairs

Asked at Microsoft

Math Dynamic Programming Memoization

#23

Rank

#125EasyFrequency: 78%

Valid Palindrome

Asked at Meta

Array Math Heap (Priority Queue)Simulation

#24

Rank

#2809EasyFrequency: 77%

Create Hello World Function

Asked at Google

#25

Rank

#66EasyFrequency: 76%

Plus One

Asked at Salesforce

Array Math

#26

Rank

#3555EasyFrequency: 76%

Final Array State After K Multiplication Operations I

Asked at Databricks

#27

Rank

#14EasyFrequency: 75%

Longest Common Prefix

Asked at DoorDash

String Trie

#28

Rank

#543EasyFrequency: 74%

Diameter of Binary Tree

Asked at Meta

Tree Depth-First Search Binary Tree

#29

Rank

#346EasyFrequency: 74%

Moving Average from Data Stream

Asked at Infosys

Array Design Queue Data Stream

#30

Rank

#975EasyFrequency: 73%

Range Sum of BST

Asked at Meta

Tree Depth-First Search Binary Search Tree Binary Tree

#31

Rank

#9EasyFrequency: 73%

Palindrome Number

Asked at PayPal

#32

Rank

#58EasyFrequency: 72%

Length of Last Word

Asked at TikTok

#33

Rank

#605EasyFrequency: 72%

Can Place Flowers

Asked at LinkedIn

Array Greedy

#34

Rank

#383EasyFrequency: 72%

Ransom Note

Asked at Airbnb

#35

Rank

#2532EasyFrequency: 71%

Remove Letter To Equalize Frequency

Asked at Salesforce

#36

Rank

#206EasyFrequency: 71%

Reverse Linked List

Asked at Infosys

Dynamic Programming Bit Manipulation

#37

Rank

#69EasyFrequency: 71%

Sqrt(x)

Asked at Infosys

Math Binary Search

#38

Rank

#338EasyFrequency: 67%

Counting Bits

Asked at Apple

#39

Rank

#283EasyFrequency: 66%

Move Zeroes

Asked at Microsoft

#40

Rank

#35EasyFrequency: 64%

Search Insert Position

Asked at Apple

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

#41

Rank

#270EasyFrequency: 62%

Closest Binary Search Tree Value

Asked at Meta

#42

Rank

#777EasyFrequency: 61%

Toeplitz Matrix

Asked at Infosys

Array Matrix

#43

Rank

#118EasyFrequency: 59%

Pascal's Triangle

Asked at Infosys

#44

Rank

#1737EasyFrequency: 59%

Maximum Nesting Depth of the Parentheses

Asked at Infosys

Array Hash Table Two Pointers Binary Search Sorting

#45

Rank

#1468EasyFrequency: 58%

Check If N and Its Double Exist

Asked at Airbnb

#46

Rank

#1646EasyFrequency: 57%

Kth Missing Positive Number

Asked at Meta

Array Hash Table Design Data Stream

#47

Rank

#1775EasyFrequency: 57%

Design an Ordered Stream

Asked at Flipkart

#48

Rank

#169EasyFrequency: 55%

Majority Element

Asked at Microsoft

Array Hash Table Divide and Conquer Sorting Counting

#49

Rank

#205EasyFrequency: 55%

Isomorphic Strings

Asked at Microsoft

Hash Table String

#50

Rank

#1128EasyFrequency: 55%

Remove All Adjacent Duplicates In String

Asked at Microsoft

#51

Rank

#26EasyFrequency: 53%

Remove Duplicates from Sorted Array

Asked at Google

Hash Table Design Data Stream

#52

Rank

#1306EasyFrequency: 52%

Minimum Absolute Difference

Asked at Apple

Array Sorting

#53

Rank

#359EasyFrequency: 51%

Logger Rate Limiter

Asked at Flipkart

#54

Rank

#21EasyFrequency: 49%

Merge Two Sorted Lists

Asked at Oracle

#55

Rank

#28EasyFrequency: 48%

Find the Index of the First Occurrence in a String

Asked at Google

Array Heap (Priority Queue)Simulation

#56

Rank

#2692EasyFrequency: 48%

Take Gifts From the Richest Pile

Asked at Google

#57

Rank

#13EasyFrequency: 44%

Roman to Integer

Asked at Salesforce

Hash Table Math String

#58

Rank

#100EasyFrequency: 44%

Same Tree

Asked at DoorDash

Tree Depth-First Search Breadth-First Search Binary Tree

#59

Rank

#851EasyFrequency: 43%

Goat Latin

Asked at Meta

Array Hash Table Math Binary Search Bit Manipulation Sorting

#60

Rank

#268EasyFrequency: 42%

Missing Number

Asked at Google

#61

Rank

#163EasyFrequency: 37%

Missing Ranges

Asked at Meta

Array

#62

Rank

#242EasyFrequency: 22%

Valid Anagram

Asked at DoorDash

Hash Table String Sorting

#63

Rank

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Easy LeetCode Interview Questions

Master 63 easy difficulty coding problems frequently asked in technical interviews at top tech companies. Perfect for building confidence and fundamental problem-solving skills.

Easy (191)Medium (457)Hard (123)

#1EasyFrequency: 100%

Two Sum

Asked at Google

Array Hash Table

Rank

#232EasyFrequency: 100%

Implement Queue using Stacks

Asked at TikTok

Stack Design Queue

Rank

#392EasyFrequency: 100%

Is Subsequence

Asked at Oracle

Two Pointers String Dynamic Programming

Rank

#817EasyFrequency: 100%

Design HashMap

Asked at DoorDash

Array Hash Table Linked List Design Hash Function

Rank

#2383EasyFrequency: 100%

Add Two Integers

Asked at Flipkart

Two Pointers String Greedy

Rank

#680EasyFrequency: 95%

Valid Palindrome II

Asked at Meta

Rank

#415EasyFrequency: 94%

Add Strings

Asked at Oracle

Math String Simulation

Rank

#234EasyFrequency: 93%

Palindrome Linked List

Asked at Databricks

Linked List Two Pointers Stack Recursion

Rank

#88EasyFrequency: 92%

Merge Sorted Array

Asked at Microsoft

Rank

#20EasyFrequency: 90%

Valid Parentheses

Asked at Airbnb

#10

Rank

#121EasyFrequency: 89%

Best Time to Buy and Sell Stock

Asked at Apple

#11

Rank

#136EasyFrequency: 89%

Single Number

Asked at Flipkart

Array Bit Manipulation

#12

Rank

#408EasyFrequency: 87%

Valid Word Abbreviation

Asked at Meta

#13

Rank

#1019EasyFrequency: 85%

Squares of a Sorted Array

Asked at Salesforce

Hash Table String Queue Counting

#14

Rank

#387EasyFrequency: 83%

First Unique Character in a String

Asked at Oracle

#15

Rank

#1908EasyFrequency: 82%

Recyclable and Low Fat Products

Asked at Salesforce

Database

#16

Rank

#141EasyFrequency: 82%

Linked List Cycle

Asked at Flipkart

Hash Table Linked List Two Pointers

#17

Rank

#733EasyFrequency: 81%

Flood Fill

Asked at Infosys

Array Depth-First Search Breadth-First Search Matrix

#18

Rank

#1894EasyFrequency: 80%

Merge Strings Alternately

Asked at Google

#19

Rank

#1566EasyFrequency: 80%

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

Asked at Salesforce

#20

Rank

#27EasyFrequency: 80%

Remove Element

Asked at Flipkart

Tree Depth-First Search Breadth-First Search Binary Tree

#21

Rank

#104EasyFrequency: 80%

Maximum Depth of Binary Tree

Asked at Flipkart

#22

Rank

#70EasyFrequency: 79%

Climbing Stairs

Asked at Microsoft

Math Dynamic Programming Memoization

#23

Rank

#125EasyFrequency: 78%

Valid Palindrome

Asked at Meta

Array Math Heap (Priority Queue)Simulation

#24

Rank

#2809EasyFrequency: 77%

Create Hello World Function

Asked at Google

#25

Rank

#66EasyFrequency: 76%

Plus One

Asked at Salesforce

Array Math

#26

Rank

#3555EasyFrequency: 76%

Final Array State After K Multiplication Operations I

Asked at Databricks

#27

Rank

#14EasyFrequency: 75%

Longest Common Prefix

Asked at DoorDash

String Trie

#28

Rank

#543EasyFrequency: 74%

Diameter of Binary Tree

Asked at Meta

Tree Depth-First Search Binary Tree

#29

Rank

#346EasyFrequency: 74%

Moving Average from Data Stream

Asked at Infosys

Array Design Queue Data Stream

#30

Rank

#975EasyFrequency: 73%

Range Sum of BST

Asked at Meta

Tree Depth-First Search Binary Search Tree Binary Tree

#31

Rank

#9EasyFrequency: 73%

Palindrome Number

Asked at PayPal

#32

Rank

#58EasyFrequency: 72%

Length of Last Word

Asked at TikTok

#33

Rank

#605EasyFrequency: 72%

Can Place Flowers

Asked at LinkedIn

Array Greedy

#34

Rank

#383EasyFrequency: 72%

Ransom Note

Asked at Airbnb

#35

Rank

#2532EasyFrequency: 71%

Remove Letter To Equalize Frequency

Asked at Salesforce

#36

Rank

#206EasyFrequency: 71%

Reverse Linked List

Asked at Infosys

Dynamic Programming Bit Manipulation

#37

Rank

#69EasyFrequency: 71%

Sqrt(x)

Asked at Infosys

Math Binary Search

#38

Rank

#338EasyFrequency: 67%

Counting Bits

Asked at Apple

#39

Rank

#283EasyFrequency: 66%

Move Zeroes

Asked at Microsoft

#40

Rank

#35EasyFrequency: 64%

Search Insert Position

Asked at Apple

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

#41

Rank

#270EasyFrequency: 62%

Closest Binary Search Tree Value

Asked at Meta

#42

Rank

#777EasyFrequency: 61%

Toeplitz Matrix

Asked at Infosys

Array Matrix

#43

Rank

#118EasyFrequency: 59%

Pascal's Triangle

Asked at Infosys

#44

Rank

#1737EasyFrequency: 59%

Maximum Nesting Depth of the Parentheses

Asked at Infosys

Array Hash Table Two Pointers Binary Search Sorting

#45

Rank

#1468EasyFrequency: 58%

Check If N and Its Double Exist

Asked at Airbnb

#46

Rank

#1646EasyFrequency: 57%

Kth Missing Positive Number

Asked at Meta

Array Hash Table Design Data Stream

#47

Rank

#1775EasyFrequency: 57%

Design an Ordered Stream

Asked at Flipkart

#48

Rank

#169EasyFrequency: 55%

Majority Element

Asked at Microsoft

Array Hash Table Divide and Conquer Sorting Counting

#49

Rank

#205EasyFrequency: 55%

Isomorphic Strings

Asked at Microsoft

Hash Table String

#50

Rank

#1128EasyFrequency: 55%

Remove All Adjacent Duplicates In String

Asked at Microsoft

#51

Rank

#26EasyFrequency: 53%

Remove Duplicates from Sorted Array

Asked at Google

Hash Table Design Data Stream

#52

Rank

#1306EasyFrequency: 52%

Minimum Absolute Difference

Asked at Apple

Array Sorting

#53

Rank

#359EasyFrequency: 51%

Logger Rate Limiter

Asked at Flipkart

#54

Rank

#21EasyFrequency: 49%

Merge Two Sorted Lists

Asked at Oracle

#55

Rank

#28EasyFrequency: 48%

Find the Index of the First Occurrence in a String

Asked at Google

Array Heap (Priority Queue)Simulation

#56

Rank

#2692EasyFrequency: 48%

Take Gifts From the Richest Pile

Asked at Google

#57

Rank

#13EasyFrequency: 44%

Roman to Integer

Asked at Salesforce

Hash Table Math String

#58

Rank

#100EasyFrequency: 44%

Same Tree

Asked at DoorDash

Tree Depth-First Search Breadth-First Search Binary Tree

#59

Rank

#851EasyFrequency: 43%

Goat Latin

Asked at Meta