Snap
83 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 146. LRU Cache | Medium | 100% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 200. Number of Islands | Medium | 100% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| Meeting Rooms II | Medium | 100% | TopicsArrayTwo PointersGreedySortingHeap (Priority Queue)Prefix Sum |
| 127. Word Ladder | Hard | 93.6% | TopicsHash TableStringBreadth-First SearchBidirectional Search |
| 815. Bus Routes | Hard | 93.6% | TopicsArrayHash TableBreadth-First Search |
| 76. Minimum Window Substring | Hard | 91.8% | TopicsHash TableStringSliding Window |
| Number of Distinct Islands | Medium | 91.8% | TopicsArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindSortingMatrixHash Function |
| Basic Calculator II | Medium | 89.7% | TopicsMathStringStack |
| Design Log Storage System | Medium | 89.7% | TopicsHash TableStringDesignOrdered Set |
| 827. Making A Large Island | Hard | 89.7% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| Word Break II | Hard | 85.1% | TopicsArrayHash TableStringDynamic ProgrammingBacktrackingTrieMemoization |
| 803. Bricks Falling When Hit | Hard | 85.1% | TopicsArrayUnion-FindMatrix |
| 39. Combination Sum | Medium | 82.5% | TopicsArrayBacktracking |
| Reverse Words in a String | Medium | 82.5% | TopicsTwo PointersString |
| 210. Course Schedule II | Medium | 82.5% | TopicsDepth-First SearchBreadth-First SearchGraph TheoryTopological Sort |
| 36. Valid Sudoku | Medium | 79.5% | TopicsArrayHash TableMatrix |
| 37. Sudoku Solver | Hard | 79.5% | TopicsArrayHash TableBacktrackingMatrixAlgorithm XDancing Links |
| 40. Combination Sum II | Medium | 79.5% | TopicsArrayBacktracking |
| Wildcard Matching | Hard | 79.5% | TopicsStringDynamic ProgrammingGreedyRecursion |
| Unique Binary Search Trees | Medium | 79.5% | TopicsMathDynamic ProgrammingTreeBinary Search TreeBinary Tree |
| 155. Min Stack | Medium | 79.5% | TopicsStackDesign |
| One Edit Distance | Medium | 79.5% | TopicsTwo PointersString |
| 206. Reverse Linked List | Easy | 79.5% | TopicsLinked ListRecursion |
| Alien Dictionary | Hard | 79.5% | TopicsArrayStringDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| Closest Binary Search Tree Value | Easy | 79.5% | TopicsBinary SearchTreeDepth-First SearchBinary Search TreeBinary Tree |
