Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 286 | Walls and Gates | Medium | ArrayBreadth-First SearchMatrix |
| 287 | Find the Duplicate Number | Medium | ArrayTwo PointersBinary Search |
| 288 | Unique Word Abbreviation | Medium | ArrayHash TableString |
| 289 | Game of Life | Medium | ArrayMatrixSimulation |
| 290 | Word Pattern | Easy | Hash TableString |
| 291 | Word Pattern II | Medium | Hash TableStringBacktracking |
| 292 | Nim Game | Easy | MathBrainteaserGame Theory |
| 293 | Flip Game | Easy | String |
| 294 | Flip Game II | Medium | MathDynamic ProgrammingBacktracking |
| 294 | Serialize and Deserialize Binary Tree | Hard | StringTreeDepth-First Search |
| 295 | Find Median from Data Stream | Hard | Two PointersDesignSorting |
| 296 | Best Meeting Point | Hard | ArrayMathSorting |
| 298 | Binary Tree Longest Consecutive Sequence | Medium | TreeDepth-First SearchBinary Tree |
| 299 | Bulls and Cows | Medium | Hash TableStringCounting |
| 300 | Longest Increasing Subsequence | Medium | ArrayBinary SearchDynamic Programming |
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