Practice problems across 75+ categories
Practice problems frequently asked at String • 803 problems | 228 Easy | 390 Medium | 177 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 736 | Sum Game | Medium | MathStringGreedy |
| 737 | Sum of Beauty of All Substrings | Medium | Hash TableStringCounting |
| 738 | Sum of Digits of String After Convert | Easy | StringSimulation |
| 739 | Sum of Largest Prime Substrings | Medium | Hash TableMathString |
| 740 | Sum of Prefix Scores of Strings | Hard | ArrayStringTrie |
| 741 | Sum of Scores of Built Strings | Hard | StringBinary SearchRolling Hash |
| 742 | Super Palindromes | Hard | MathStringEnumeration |
| 743 | Swap Adjacent in LR String | Medium | Two PointersString |
| 744 | Swap For Longest Repeated Character Substring | Medium | Hash TableStringSliding Window |
| 745 | Synonymous Sentences | Medium | ArrayHash TableString |
| 746 | Tag Validator | Hard | StringStack |
| 747 | Take K of Each Character From Left and Right | Medium | Hash TableStringSliding Window |
| 748 | Ternary Expression Parser | Medium | StringStackRecursion |
| 749 | Text Justification | Hard | ArrayStringSimulation |
| 750 | The k-th Lexicographical String of All Happy Strings of Length n | Medium | StringBacktracking |
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