Confluent
9 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 36. Valid Sudoku | Medium | 100% | TopicsArrayHash TableMatrix |
| 37. Sudoku Solver | Hard | 96.9% | TopicsArrayHash TableBacktrackingMatrixAlgorithm XDancing Links |
| 146. LRU Cache | Medium | 95.2% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 981. Time Based Key-Value Store | Medium | 93.4% | TopicsHash TableStringBinary SearchDesign |
| Minimum Time to Eat All Grains | Hard | 86.6% | TopicsArrayTwo PointersBinary SearchSorting |
| 1797. Design Authentication Manager | Medium | 83.8% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 39. Combination Sum | Medium | 71.8% | TopicsArrayBacktracking |
| 765. Couples Holding Hands | Hard | 65.7% | TopicsGreedyDepth-First SearchBreadth-First SearchUnion-FindGraph Theory |
| Cache With Time Limit | Medium | 57.1% | Topics— |
