Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 3391 | Word Pattern II | Medium | Hash TableStringBacktracking |
| 3392 | Word Search | Medium | ArrayStringBacktracking |
| 3393 | Word Search II | Hard | ArrayStringBacktracking |
| 3394 | Word Subsets | Medium | ArrayHash TableString |
| 3395 | Words Within Two Edits of Dictionary | Medium | ArrayStringTrie |
| 3396 | X of a Kind in a Deck of Cards | Easy | ArrayHash TableMath |
| 3397 | XOR Operation in an Array | Easy | MathBit Manipulation |
| 3398 | XOR Queries of a Subarray | Medium | ArrayBit ManipulationPrefix Sum |
| 3399 | Year on Year Growth Rate | Hard | Database |
| 3400 | Zero Array Transformation I | Medium | ArrayPrefix Sum |
| 3401 | Zero Array Transformation II | Medium | ArrayBinary SearchPrefix Sum |
| 3402 | Zero Array Transformation III | Medium | ArrayGreedySorting |
| 3403 | Zero Array Transformation IV | Medium | ArrayDynamic Programming |
| 3404 | Zigzag Conversion | Medium | String |
| 3405 | Zigzag Grid Traversal With Skip | Easy | ArrayMatrixSimulation |
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