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74 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)

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Title	Difficulty	Videos	Companies
Add Two Numbers represented as Linked List in Reversed Order	medium	-	adobe aetion airbnb
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
Generate Parentheses	medium	-	adobe alibaba amazon
Next Permutation	medium	-	adobe amazon apple
Search in Rotated Sorted Array	medium		adobe alibaba amazon
Find first and last positions of target element in sorted array	medium	-	airbnb amazon apple
Permutations of Array 1	medium	-	adobe amazon apple
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
Simplify Path	medium	-	adobe amazon bloomberg
Edit Distance	medium	-	adobe amazon apple
Subsets 1	medium		adobe amazon apple
Word Search 1 - Find if word exists	medium		adobe amazon apple
Reverse Linked List 2 - between m and n	medium	-	adobe amazon apple
Validate Binary Search Tree	medium		adobe amazon apple
Binary Tree Traversal - Zigzag Level Order Traversal	medium	-	amazon apple bloomberg
Construct Binary Tree from Inorder and Preorder Traversal	medium		adobe amazon apple
Path Sum 2 - find all root to leaf paths	medium	-	adobe amazon apple
Flatten binary tree to linked list in order of preorder traversal	medium	-	adobe amazon apple
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
Design LRU Cache	medium	-	adobe alibaba amazon
Sort a Linked List	medium	-	adobe amazon bytedance
Maximum Product Subarray	medium		adobe akuna-capital alibaba
Find Peak Element in a Given Array	medium	-	amazon apple bloomberg
2Sum 2 – Input array is sorted	medium		amazon apple bloomberg
Binary Search Tree BST Inorder Iterator	medium	-	alibaba amazon apple
Largest Number From Given Numbers	medium		amazon apple bytedance
House Robber	medium		adobe airbnb amazon
Binary Tree Right Side View	medium	-	adobe amazon apple
Number of Islands	medium		adobe affirm alibaba
Course Schedule 1 - Is it Possible	medium		amazon apple bloomberg
Minimum Size Subarray Sum	medium	-	amazon apple bloomberg
Kth Largest Element in an Array	medium	-	adobe airbnb alibaba
Lowest Common Ancestor of a Binary Tree	medium		adobe airbnb amazon
Product of Array Except Self	medium		adobe amazon apple
Search a 2D Matrix 2 - Rows and columns are sorted	medium	-	adobe amazon apple
Walls and Gates	medium	-	amazon apple bloomberg
Binary Tree Traversal - Vertical Order Traversal	medium	-	adobe amazon bloomberg
Remove Duplicate Letters	medium	-	adobe amazon apple
Generalized Abbreviation	medium	-	bytedance google
Coin Change with Fewest Number of Coins Given Infinite Supply	medium		adobe affirm airbnb
Top K Frequent Elements	medium		amazon apple bloomberg
Android Unlock Patterns	medium	-	amazon apple bytedance
Lexicographical Numbers	medium		adobe bloomberg bytedance

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