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59 problems total

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
m Coloring Problem	medium	-	google
Letter Combinations of a Phone Number	medium	-	amazon apple atlassian
Generate Parentheses	medium	-	adobe alibaba amazon
Letter Tile Possibilities	medium		google microsoft
Sudoku Solver	hard	-	adobe amazon apple
Combination Sum 1	medium		airbnb akuna-capital amazon
Combination Sum 2 - Cant Reuse same element	medium	-	adobe amazon apple
Permutations of Array 1	medium	-	adobe amazon apple
N-Queens	hard	-	adobe amazon apple
Three-Word Additive Cryptarithmetic Solver	medium	-	google
Subsets 1	medium		adobe amazon apple
Word Search 1 - Find if word exists	medium		adobe amazon apple
Path Sum 2 - find all root to leaf paths	medium	-	adobe amazon apple
Word Ladder 2 - Get all the ladders	hard	-	amazon apple bloomberg
Palindrome Partitioning	medium		adobe amazon bloomberg
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Word Break 2 - Construct a sentence	hard		amazon apple audible
Word Search 2 - Return All Words	hard		airbnb amazon apple
Combination Sum 3 - Find k numbers summing up to n	medium	-	amazon bloomberg google
Lowest Common Ancestor of a Binary Tree	medium		adobe airbnb amazon
Factor Combinations	medium	-	google linkedin pinterest
Binary Tree Path - All root to leaf paths	easy	-	adobe amazon apple
Palindrome Permutation II	medium	-	amazon google microsoft
Expression Add Operators	hard	-	apple bytedance facebook
Walls and Gates	medium	-	amazon apple bloomberg
Flip Game 2	medium	-	google
Remove Invalid Parentheses Problem	hard	-	amazon apple bloomberg
Generalized Abbreviation	medium	-	bytedance google
Longest Increasing Path in a Matrix	hard	-	adobe amazon apple
Reconstruct Itinerary	hard	-	amazon apple bloomberg
Android Unlock Patterns	medium	-	amazon apple bytedance
Count Numbers with Unique Digits	medium	-	google
Binary Watch	easy	-	apple google
Minimum Unique Word Abbreviation	hard	-	google
Partition Equal Subset Sum	medium	-	amazon apple ebay
Word Squares	hard	-	google oracle
Optimal Account Balancing	hard	-	amazon bytedance google
Robot Room Cleaner	hard	-	amazon facebook google
Target Sum	medium		facebook google microsoft
Beautiful Arrangement	medium	-	google mathworks
Shopping Offers	medium	-	google
24 Game	hard	-	amazon facebook google
Next Closest Time	medium	-	adobe amazon bytedance
Partition to K Equal Sum Subsets	medium	-	amazon bytedance ebay
Flood Fill	easy	-	amazon apple bloomberg
Sliding Puzzle	hard	-	airbnb amazon facebook
Ambiguous Coordinates	medium	-	google
Unique Paths in Grid 3 - Count all paths moving in 4 directions with obstacles and custom start and end	hard	-	amazon google limebike
Vertical Order Traversal of a Binary Tree	hard	-	adobe amazon bloomberg
Smallest String Starting From Leaf	medium	-	google

Showing 1 to 50 of 59 results