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Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)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(3944)

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Title	Difficulty	Videos	Companies
Bishop diagonally attack on chess board	medium	-	google
Integer To Roman	medium	-	adobe amazon apple
Roman To Integer	easy		adobe amazon apple
4Sum	medium	-	adobe amazon apple
Rabin-Karp Algorithm Explained	medium	-
Single Number 1 - All elements except one occur twice	easy		adobe airbnb amazon
Contains Duplicate 1 - Check if array has duplicates	easy		adobe airbnb amazon
Contains Duplicate 2 - within k distance	easy	-	adobe airbnb amazon
Integer to English Words	hard		amazon apple barclays
Intersection of Two Arrays 2 - Duplicates allowed	easy	-	amazon apple bloomberg
Find anagrams of a string in another string	medium	-	amazon bloomberg facebook
Continuous Subarray Sum	medium		amazon bytedance facebook
Brick Wall	medium	-	adobe bloomberg facebook
Find Duplicate File in System	medium	-	amazon apple dropbox
Sum of Square Numbers	medium		linkedin
Split Array into Consecutive Subsequences	medium	-	google
Reorganize String	medium	-	amazon apple ebay
Hand of Straights	medium		bloomberg coupang ebay
Find the Town Judge	easy	-	amazon arista facebook
Longest Arithmetic Subsequence	medium	-	amazon facebook google
Find the Longest Substring Containing Vowels in Even Counts	medium		microsoft
Make Two Arrays Equal by Reversing Subarrays	easy	-	facebook
Count Good Meals	medium	-
Check if the Sentence Is Pangram	easy	-
Find Original Array From Doubled Array	medium	-
Kth Distinct String in an Array	easy
Make Array Zero by Subtracting Equal Amounts	easy	-
Find the Length of the Longest Common Prefix	medium	-