💡 Problems
29 problems
Pattern
Two Sum II - Input Array Is Sorted
EasyFreetwo pointersarray
AmazonGoogleApple
Valid Palindrome
EasyFreetwo pointersstring
MetaMicrosoftApple
Container With Most Water
MediumFreetwo pointersarray
AmazonGoogleGoldman Sachs
Best Time to Buy and Sell Stock
EasyFreesliding windowarray
AmazonMetaGoogle
Maximum Sum Subarray of Size K
EasyFreesliding windowarray
AmazonMicrosoftApple
Binary Search
EasyFreebinary searcharray
GoogleAmazonMicrosoft
3Sum
MediumFreetwo pointersarray
AmazonMetaGoogle
Trapping Rain Water
Hard★ Premiumtwo pointersarray
AmazonGoogleGoldman Sachs
Longest Substring Without Repeating Characters
MediumFreesliding windowstring
AmazonMetaGoogle
Minimum Window Substring
Hard★ Premiumsliding windowstring
MetaAmazonGoogle
Longest Repeating Character Replacement
MediumFreesliding windowstring
GoogleAmazonMicrosoft
Search in Rotated Sorted Array
MediumFreebinary searcharray
MetaAmazonGoogle
Find Minimum in Rotated Sorted Array
MediumFreebinary searcharray
AmazonMicrosoftMeta
Koko Eating Bananas
MediumFreebinary searcharray
GoogleAmazonMeta
Find Peak Element
MediumFreebinary searcharray
GoogleMetaMicrosoft
Reverse Linked List
EasyFreetwo pointerslinked list
AmazonMicrosoftApple
Linked List Cycle
EasyFreetwo pointerslinked list
AmazonMicrosoft
Merge Two Sorted Lists
EasyFreetwo pointerslinked list
AmazonMicrosoft
Maximum Depth of Binary Tree
EasyFreedfstree
AmazonMicrosoft
Invert Binary Tree
EasyFreedfstree
GoogleMac
Two Sum
EasyFreehash maphash map
AmazonGoogleMeta
Valid Parentheses
EasyFreestackstack
MetaAmazon
Merge Intervals
MediumFreegreedyarray
GoogleAmazon
Clone Graph
MediumFreebfsgraphgraph
MetaAmazonGoogle
Kth Largest Element in an Array
MediumFreeheapheap
AmazonMetaGoogle
Implement Trie (Prefix Tree)
MediumFreetrietree
GoogleAmazonMicrosoft
Coin Change
MediumFreedynamic programmingdynamic programming
AmazonMicrosoftGoogle
Longest Common Subsequence
Medium★ Premiumdynamic programmingdynamic programming
AmazonGoogleMicrosoft
Subsets
MediumFreebacktrackingbacktracking
AmazonMicrosoftMeta