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
20 of 41 matching · 2723 totalSort: id ↑
No.ProblemDifficulty
- 0070Climbing StairsEasy
- 0139Word BreakMed
- 0140Word Break IIHard
- 0229Different Ways to Add ParenthesesMed
- 0316Longest Increasing Path in a MatrixHard
- 0384Integer ReplacementMed
- 0451Can I WinMed
- 0475Zuma GameHard
- 0496Fibonacci NumberEasy
- 0530Remove BoxesHard
- 0592Shopping OffersMed
- 0645Stickers to Spell WordHard
- 0652Partition to K Equal Sum SubsetsMed
- 0727Sliding PuzzleHard
- 0848All Possible Full Binary TreesMed
- 0867Cat and MouseHard
- 0918Least Operators to Express NumberHard
- 1072N-th Tribonacci NumberEasy
- 1285Sort Integers by The Power ValueMed
- 1335Number of Ways of Cutting a PizzaHard
Showing 20 of 41