Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 721 | Smallest Common Region | Medium | ArrayHash TableString |
| 722 | Smallest Divisible Digit Product II | Hard | MathStringBacktracking |
| 723 | Smallest K-Length Subsequence With Occurrences of a Letter | Hard | StringStackGreedy |
| 724 | Smallest Palindromic Rearrangement I | Medium | StringSortingCounting Sort |
| 725 | Smallest Palindromic Rearrangement II | Hard | Hash TableMathString |
| 726 | Smallest String Starting From Leaf | Medium | StringBacktrackingTree |
| 727 | Smallest String With A Given Numeric Value | Medium | StringGreedy |
| 728 | Smallest String With Swaps | Medium | ArrayHash TableString |
| 729 | Smallest Subsequence of Distinct Characters | Medium | StringStackGreedy |
| 730 | Smallest Substring With Identical Characters II | Hard | StringBinary Search |
| 731 | Snake in Matrix | Easy | ArrayStringSimulation |
| 732 | Solve the Equation | Medium | MathStringSimulation |
| 733 | Sort Characters By Frequency | Medium | Hash TableStringSorting |
| 734 | Sort Features by Popularity | Medium | ArrayHash TableString |
| 735 | Sort the People | Easy | ArrayHash TableString |
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