Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 751 | Strange Printer | Hard | StringDynamic Programming |
| 752 | Stream of Characters | Hard | ArrayStringDesign |
| 753 | String Compression | Medium | Two PointersString |
| 754 | String Compression II | Hard | StringDynamic Programming |
| 755 | String Compression III | Medium | String |
| 756 | String Matching in an Array | Easy | ArrayStringString Matching |
| 757 | String to Integer (atoi) | Medium | String |
| 758 | String Transformation | Hard | MathStringDynamic Programming |
| 759 | String Transforms Into Another String | Hard | Hash TableStringGraph |
| 760 | String Without AAA or BBB | Medium | StringGreedy |
| 761 | Strings Differ by One Character | Medium | Hash TableStringRolling Hash |
| 762 | Strobogrammatic Number | Medium | Hash TableTwo PointersString |
| 763 | Strobogrammatic Number II | Medium | ArrayStringRecursion |
| 764 | Strobogrammatic Number III | Hard | ArrayStringRecursion |
| 765 | Strong Password Checker | Hard | StringGreedyHeap (Priority Queue) |
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