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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
Spiral Matrix 1 - Return	medium		adobe amazon apple
Word Search 1 - Find if word exists	medium		adobe amazon apple
Number of Islands	medium		adobe affirm alibaba
Search a 2D Matrix 2 - Rows and columns are sorted	medium	-	adobe amazon apple
Paint House 1 - N houses with 3 colors with no two adjacent houses with same color color	medium	-	apple linkedin microsoft
Paint House 2 - N houses with k colors with no two adjacent houses with same color color	hard	-	facebook google linkedin
Find the Celebrity	medium	-	amazon apple facebook
Best Meeting Point	hard	-	amazon facebook google
Sparse Matrix Multiplication	medium	-	amazon apple bloomberg
Number of Connected Components in an Undirected Graph	medium	-	amazon facebook google
Longest Palindromic Subsequence 1 - Get Length	medium	-	amazon apple bloomberg