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43 problems total

Array (1906)Sorting (442)Depth First Search (316)Database (301)Breadth First Search (241)Tree (241)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

All Topics(4301)Database(305)Java(0)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3945)

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Title	Difficulty	Companies
Two Sum	easy	adobe aetion affirm
Longest Substring Without Repeating Characters	medium	adobe alation alibaba
Container With Most Water	medium	adobe amazon apple
3Sum0 - Find three elements in an array that sum to a zero	medium	adobe akuna-capital alibaba
Remove Nth Node From End of List	medium	adobe amazon apple
Merge Two Sorted Linked Lists	easy	adobe airbnb alibaba
Merge K Sorted Lists	hard	adobe airbnb alibaba
Search in Rotated Sorted Array	medium	adobe alibaba amazon
Trapping Rain Water	hard	adobe affirm airbnb
Maximum Subarray Sum	medium	adobe alibaba amazon
Spiral Matrix 1 - Return	medium	adobe amazon apple
Jump Game 1 - Check if it reaches last index	medium	adobe amazon apple
Merge Overlapping Intervals	medium	adobe alibaba amazon
Minimum Window Substring	hard	adobe airbnb amazon
Subsets 1	medium	adobe amazon apple
Word Search 1 - Find if word exists	medium	adobe amazon apple
Remove duplicates from Sorted List 1	easy	adobe amazon apple
Validate Binary Search Tree	medium	adobe amazon apple
Maximum Depth of Binary Tree	easy	adobe amazon apple
Construct Binary Tree from Inorder and Preorder Traversal	medium	adobe amazon apple
Best Time To Buy And Sell Stock 1 - only one transaction	easy	adobe akuna-capital alibaba
Binary Tree Path Sum - Maximum between any two nodes	hard	adobe amazon appdynamics
Word Break 1 - Check if word is breakable	medium	adobe amazon apple
Reorder List such that i-th element points to n-i-th element	medium	adobe amazon apple
Maximum Product Subarray	medium	adobe akuna-capital alibaba
2Sum 2 – Input array is sorted	medium	amazon apple bloomberg
Largest Number From Given Numbers	medium	amazon apple bytedance
House Robber	medium	adobe airbnb amazon
Number of Islands	medium	adobe affirm alibaba
Reverse Linked List	easy	adobe alibaba amazon
Course Schedule 1 - Is it Possible	medium	amazon apple bloomberg
Word Search 2 - Return All Words	hard	airbnb amazon apple
Lowest Common Ancestor of a Binary Tree	medium	adobe airbnb amazon
Product of Array Except Self	medium	adobe amazon apple
Find Median from Data Stream	hard	adobe amazon apple
Coin Change with Fewest Number of Coins Given Infinite Supply	medium	adobe affirm airbnb
Top K Frequent Elements	medium	amazon apple bloomberg
Intersection of Two Arrays 1 - Unique Elements	easy	amazon apple bloomberg
Lexicographical Numbers	medium	adobe bloomberg bytedance
Continuous Subarray Sum	medium	amazon bytedance facebook
Maximum Swap	medium	amazon apple bytedance
Subarray Sums Divisible by K	medium	amazon bytedance expedia
Longest Common Subsequence LCS 1 - Get Length	medium	amazon bytedance facebook

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