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
9 of 9 matching · 2723 totalSort: id ↑
No.ProblemDifficulty
- 0068Text JustificationHard
- 0386Evaluate DivisionMed
- 0513Random Pick with WeightMed
- 0935Time Based Key-Value StoreMed
- 1647Number of Orders in the BacklogMed
- 1860Simple Bank SystemMed
- 2118Decode the MessageEasy
- 2157Check if There is a Valid Partition For The ArrayMed
- 2711Find the Length of the Longest Common PrefixMed
All 9 matching problems loaded