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36 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)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3945)

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Title	Difficulty	Videos	Companies
Two Sum	easy		adobe aetion affirm
3Sum0 - Find three elements in an array that sum to a zero	medium		adobe akuna-capital alibaba
Search in Rotated Sorted Array	medium		adobe alibaba amazon
Valid Sudoku	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
Group Anagrams	medium		adobe affirm amazon
Maximum Subarray Sum	medium		adobe alibaba amazon
Merge Overlapping Intervals	medium		adobe alibaba amazon
Set Matrix Zeros	medium		adobe amazon apple
Candy distribution	hard	-	amazon apple google
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Find Minimum in Rotated Sorted Array	medium		amazon apple bloomberg
Largest Number From Given Numbers	medium		amazon apple bytedance
Number of Islands	medium		adobe affirm alibaba
Word Search 2 - Return All Words	hard		airbnb amazon apple
Kth Largest Element in an Array	medium	-	adobe airbnb alibaba
Skyline Problem	hard	-	adobe amazon apple
Product of Array Except Self	medium		adobe amazon apple
Search a 2D Matrix 2 - Rows and columns are sorted	medium	-	adobe amazon apple
Flatten 2D Vector	medium	-	airbnb apple facebook
Find Duplicate Number in array containing n+1 numbers between 1 and n	medium	-	adobe amazon apple
Longest Increasing Subsequence	medium		adobe amazon apple
Design Tic-Tac-Toe	medium	-	amazon apple bloomberg
Intersection of Two Arrays 2 - Duplicates allowed	easy	-	amazon apple bloomberg
Design Snake Game	medium	-	amazon apple bloomberg
Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowed	medium	-	adobe affirm amazon
Shuffle an Array	medium	-	amazon apple bloomberg
K-diff Pairs in an Array	medium	-	amazon bloomberg goldman-sachs
Design HashMap	easy	-	adobe amazon apple
Find Pivot Index	easy	-	amazon apple bloomberg
Height Checker	easy		adobe amazon goldman-sachs
Check If a Number Is Majority Element in a Sorted Array	easy	-	salesforce
Find the Smallest Divisor Given a Threshold	medium	-	bytedance expedia salesforce

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