Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 676 | Shuffle String | Easy | ArrayString |
| 677 | Similar RGB Color | Easy | MathStringEnumeration |
| 678 | Similar String Groups | Hard | ArrayHash TableString |
| 679 | Simplified Fractions | Medium | MathStringNumber Theory |
| 680 | Simplify Path | Medium | StringStack |
| 681 | Single-Row Keyboard | Easy | Hash TableString |
| 682 | Slowest Key | Easy | ArrayString |
| 683 | Smallest Common Region | Medium | ArrayHash TableString |
| 684 | Smallest Divisible Digit Product II | Hard | MathStringBacktracking |
| 685 | Smallest K-Length Subsequence With Occurrences of a Letter | Hard | StringStackGreedy |
| 686 | Smallest Palindromic Rearrangement I | Medium | StringSortingCounting Sort |
| 687 | Smallest Palindromic Rearrangement II | Hard | Hash TableMathString |
| 688 | Smallest String Starting From Leaf | Medium | StringBacktrackingTree |
| 689 | Smallest String With A Given Numeric Value | Medium | StringGreedy |
| 690 | Smallest String With Swaps | Medium | ArrayHash TableString |
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