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
11 of 11 matching · 2723 totalSort: id ↑
No.ProblemDifficulty
- 0049Group AnagramsMed
- 0055Jump GameMed
- 0190Happy NumberEasy
- 0203Kth Largest Element in an ArrayMed
- 0797Guess the WordHard
- 0893Minimum Area RectangleMed
- 0917Minimum Area Rectangle IIMed
- 0978Video StitchingMed
- 1001Longest String ChainMed
- 1828Find Original Array From Doubled ArrayMed
- 1926Find All Possible Recipes from Given SuppliesMed
All 11 matching problems loaded