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Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

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Title	Difficulty	Videos	Companies
Divide Two Integers	medium	-	adobe amazon apple
Add Two Numbers represented as Linked List in Reversed Order	medium	-	adobe aetion airbnb
Reverse Integer	medium	-	adobe amazon apple
Palindrome Number	easy		adobe amazon apple
Integer To Roman	medium	-	adobe amazon apple
Roman To Integer	easy		adobe amazon apple
Multiply Strings	medium	-	amazon apple expedia
Rotate n x n matrix by 90 degrees	medium		adobe akuna-capital amazon
Implement Power Function 1	medium	-	adobe amazon apple
Kth Permutation Sequence of Numbers 1 to N	hard	-	amazon apple facebook
Unique Paths in Grid 1 - Count all paths moving right or down	medium		adobe alibaba amazon
Plus One 1 - Given number as array plus one	easy	-	adobe amazon apple
Add Binary Strings	easy	-	adobe amazon apple
Square root of an integer	easy	-	amazon apple bloomberg
Climbing Stairs - Take atmost 2 Steps	easy		adobe alibaba amazon
Unique BSTs 1 - Count	medium	-	adobe amazon apple
Maximum Points on a Line	hard	-	amazon apple bloomberg
Evaluate Reverse Polish Notation	medium	-	amazon atlassian facebook
Fraction to Recurring Decimal	medium	-	airbnb amazon apple
Excel Sheet Column Title	easy	-	adobe apple facebook
Excel Sheet Column Number	easy	-	amazon apple bloomberg
Happy Number	easy	-	adobe airbnb amazon
Count Primes	medium	-	adobe amazon apple
Basic Calculator 1	hard	-	adobe amazon bloomberg
Basic Calculator 2 Problem	medium	-	airbnb amazon apple
Power of Two	easy	-	amazon apple google
Different Ways to Add Parentheses	medium	-	amazon cisco citadel
Generate nth ugly number	medium	-	amazon oracle uber
Missing Number	easy		adobe amazon apple
Integer to English Words	hard		amazon apple barclays
Least Number of Perfect Squares that Sums to n	medium	-	adobe amazon apple
Expression Add Operators	hard	-	apple bytedance facebook
Flip Game 2	medium	-	google
Best Meeting Point	hard	-	amazon facebook google
Super Ugly Number	medium	-	google
Power of Three	easy	-	apple goldman-sachs google
Self Crossing	hard	-	amazon google
Integer Break	medium	-	adobe apple google
Line Reflection	medium	-	amazon google
Count Numbers with Unique Digits	medium	-	google
Sort Transformed Array	medium	-	facebook google
Largest Divisible Subset	medium	-	adobe amazon google
Water and Jug	medium	-	amazon google lyft
Valid Perfect Square	easy	-	amazon facebook google
Plus One 2 - Given number as Linked List plus one	medium	-	amazon google
Sum of Two Integers	medium		amazon apple facebook
Guess Number Higher or Lower II	medium	-	adobe google
Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowed	medium	-	adobe affirm amazon
Insert Delete Search and GetRandom in Constant Time 2 - Duplicates allowed	hard	-	affirm amazon apple
Linked List Random Node	medium	-	amazon facebook google

Showing 1 to 50 of 138 results