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65 problems total

Array (176)Sorting (46)Depth First Search (44)Tree (41)Breadth First Search (35)Stack (29)Linked List (28)Recursion (18)Graph Theory (12)Monotonic Stack (10)Queue (7)Shortest Path (2)

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Title	Difficulty	Videos	Companies
Two Sum	easy		adobe aetion affirm
Median of Two Sorted Arrays	hard	-	adobe airbnb alibaba
3Sum0 - Find three elements in an array that sum to a zero	medium		adobe akuna-capital alibaba
3Sum - Closest	medium	-	adobe amazon apple
4Sum	medium	-	adobe amazon apple
Remove duplicates from Sorted Array 1	easy		adobe amazon apple
Remove Element	easy		amazon bloomberg google
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
Combination Sum 2 - Cant Reuse same element	medium	-	adobe amazon apple
First Missing Positive	hard	-	adobe amazon apple
Trapping Rain Water	hard		adobe affirm airbnb
Rotate n x n matrix by 90 degrees	medium		adobe akuna-capital amazon
Permutations of Array 1	medium	-	adobe amazon apple
Permutations of Array 2 - Array has duplicates	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
Unique Paths in Grid 2 - Count all paths moving right or down with obstacles	medium	-	amazon apple bloomberg
Subsets 1	medium		adobe amazon apple
Word Search 1 - Find if word exists	medium		adobe amazon apple
Search in Rotated Sorted Array 2 - Check if number exists - Duplicates allowed	medium	-	adobe amazon bloomberg
Largest Rectangle in Histogram	hard		adobe amazon bloomberg
Maximal Rectangle	hard	-	adobe amazon bloomberg
Merge Two Sorted Arrays	easy	-	adobe amazon apple
Subsets 2	medium	-	amazon bloomberg facebook
Construct Binary Tree from Inorder and Postorder Traversal	medium	-	amazon bloomberg facebook
Pascal’s Triangle 1 - Generate first n rows	easy	-	adobe amazon apple
Minimum Triangle path sum from top to bottom	medium	-	amazon apple bloomberg
Best Time To Buy And Sell Stock 3 - at most twice	hard	-	amazon apple atlassian
Longest Consecutive Sequence	medium		adobe amazon apple
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Word Break 2 - Construct a sentence	hard		amazon apple audible
Maximum Product Subarray	medium		adobe akuna-capital alibaba
2Sum 2 – Input array is sorted	medium		amazon apple bloomberg
Best Time To Buy And Sell Stock 4 - at most k times	hard	-	amazon apple bloomberg
House Robber	medium		adobe airbnb amazon
Count Primes	medium	-	adobe amazon apple
Minimum Size Subarray Sum	medium	-	amazon apple bloomberg
Word Search 2 - Return All Words	hard		airbnb amazon apple
Kth Largest Element in an Array	medium		adobe airbnb alibaba
Combination Sum 3 - Find k numbers summing up to n	medium	-	amazon bloomberg google
Majority Element 2 - With n by 3 definition	medium	-	adobe amazon apple
Sliding Window Maximum	hard		adobe alibaba amazon
Search a 2D Matrix 2 - Rows and columns are sorted	medium	-	adobe amazon apple
Meeting Rooms 1 - Can person attend all meetings	easy		amazon bloomberg facebook
Move Zeroes at the end of array	easy	-	adobe amazon apple
Find Duplicate Number in array containing n+1 numbers between 1 and n	medium	-	adobe amazon apple
Game of Life	medium	-	amazon bloomberg dropbox

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