DSA
Master the patterns
Search the bank, then filter by difficulty, pattern, data structure, or algorithm. Each problem includes approaches, solutions, and walkthroughs.
Active·2,723
Easy·667
Medium·1,394
Hard·662
Patterns
Recognize the move
Filter the bank by pattern — each card links into the problem index.
Problem index
Browse problems
Search by title, then refine with facets. Sorted by problem ID.
Difficulty
Facets
10 of 10 matching · 2723 totalSort: id ↑
No.ProblemDifficulty
- 0044Wildcard MatchingHard
- 0068Text JustificationHard
- 0440Minimum Moves to Equal Array ElementsMed
- 0715Special Binary StringHard
- 0734Reaching PointsHard
- 0874Number of Music PlaylistsHard
- 0899Minimum Increment to Make Array UniqueMed
- 1072N-th Tribonacci NumberEasy
- 1183Search Suggestions SystemMed
- 1267Rank Teams by VotesMed
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