| Longest Substring Without Repeating Characters | Medium | 38.5% | 88.6% |
| Valid Parentheses | Easy | 43.7% | 86.1% |
| Largest Number After Mutating Substring | Medium | 37.9% | 86.1% |
| Sort the People | Easy | 84.8% | 86.1% |
| Can Convert String in K Moves | Medium | 37.0% | 86.1% |
| Reverse String | Easy | 80.6% | 72.7% |
| Valid Anagram | Easy | 67.8% | 67.9% |
| Longest Common Prefix | Easy | 47.1% | 67.9% |
| Generate Parentheses | Medium | 78.3% | 62.1% |
| Group Anagrams | Medium | 72.2% | 62.1% |
| Reverse Words in a String | Medium | 55.6% | 54.6% |
| Longest Palindromic Substring | Medium | 37.4% | 54.6% |
| Palindrome Partitioning | Medium | 73.7% | 54.6% |
| Find the Index of the First Occurrence in a String | Easy | 46.3% | 54.6% |
| Roman to Integer | Easy | 66.3% | 44.3% |
| String to Integer (atoi) | Medium | 20.6% | 44.3% |
| Valid Palindrome | Easy | 52.8% | 44.3% |
| Integer to Roman | Medium | 70.5% | 44.3% |
| Greatest Common Divisor of Strings | Easy | 53.4% | 44.3% |
| Maximum Score Words Formed by Letters | Hard | 81.5% | 44.3% |
| Edit Distance | Medium | 60.2% | 44.3% |
| Minimum Window Substring | Hard | 47.0% | 44.3% |
| Isomorphic Strings | Easy | 48.1% | 44.3% |
| To Lower Case | Easy | 84.7% | 44.3% |
