| Valid Word | Easy | 50.9% | 93.2% |
| Break a Palindrome | Medium | 51.6% | 93.2% |
| Rearrange Words in a Sentence | Medium | 66.9% | 93.2% |
| String Compression | Medium | 59.6% | 93.2% |
| Unique Substrings With Equal Digit Frequency | Medium | 64.6% | 93.2% |
| Remove Duplicate Letters | Medium | 52.8% | 83.9% |
| Group Anagrams | Medium | 72.2% | 79.8% |
| Count and Say | Medium | 62.3% | 69.3% |
| Valid Parentheses | Easy | 43.7% | 69.3% |
| Minimum Number of Chairs in a Waiting Room | Easy | 79.2% | 69.3% |
| Maximum Palindromes After Operations | Medium | 45.6% | 69.3% |
| Count Vowel Substrings of a String | Easy | 72.9% | 69.3% |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 61.8% |
| Roman to Integer | Easy | 66.3% | 61.8% |
| Flip String to Monotone Increasing | Medium | 61.9% | 61.8% |
| Reorganize String | Medium | 56.8% | 61.8% |
| Basic Calculator II | Medium | 46.7% | 51.4% |
| Find the Index of the First Occurrence in a String | Easy | 46.3% | 51.4% |
| Generate Parentheses | Medium | 78.3% | 51.4% |
| Minimum Number of Swaps to Make the String Balanced | Medium | 78.1% | 51.4% |
| Word Ladder | Hard | 44.9% | 51.4% |
| Letter Combinations of a Phone Number | Medium | 65.5% | 51.4% |
| Reformat Date | Easy | 68.3% | 51.4% |
| Palindrome Pairs | Hard | 37.0% | 51.4% |
