| Longest Palindromic Substring | Medium | 37.4% | 77.4% |
| Longest Common Prefix | Easy | 47.1% | 65.8% |
| Valid Anagram | Easy | 67.8% | 62.1% |
| Find the Index of the First Occurrence in a String | Easy | 46.3% | 62.1% |
| Valid Parentheses | Easy | 43.7% | 62.1% |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 60.6% |
| Remove Letter To Equalize Frequency | Easy | 19.2% | 57.4% |
| Reverse String | Easy | 80.6% | 55.6% |
| Valid Palindrome | Easy | 52.8% | 55.6% |
| Palindrome Partitioning IV | Hard | 45.2% | 55.6% |
| First Unique Character in a String | Easy | 65.1% | 51.3% |
| Roman to Integer | Easy | 66.3% | 45.8% |
| Add Binary | Easy | 57.7% | 45.8% |
| Generate Parentheses | Medium | 78.3% | 42.3% |
| Length of Last Word | Easy | 58.3% | 42.3% |
| Group Anagrams | Medium | 72.2% | 42.3% |
| String to Integer (atoi) | Medium | 20.6% | 38.0% |
| Longest Palindromic Subsequence | Medium | 65.1% | 38.0% |
| Serialize and Deserialize Binary Tree | Hard | 60.4% | 38.0% |
| Reverse Words in a String | Medium | 55.6% | 38.0% |
| Letter Combinations of a Phone Number | Medium | 65.5% | 38.0% |
| Fizz Buzz | Easy | 75.3% | 32.6% |
| Largest Number | Medium | 42.6% | 32.6% |
| String Compression | Medium | 59.6% | 32.6% |
| Remove Outermost Parentheses | Easy | 86.9% | 25.2% |
| Integer to English Words | Hard | 34.8% | 25.2% |
| Permutation in String | Medium | 48.5% | 25.2% |
| String Compression III | Medium | 67.0% | 25.2% |
| Remove All Occurrences of a Substring | Medium | 78.4% | 25.2% |
| Maximum Nesting Depth of the Parentheses | Easy | 84.8% | 25.2% |
| Repeated Substring Pattern | Easy | 47.9% | 25.2% |
| Find the Original Typed String I | Easy | 72.1% | 25.2% |
| Valid Word | Easy | 50.9% | 25.2% |
| Regular Expression Matching | Hard | 30.5% | 25.2% |
| Longest Balanced Substring II | Medium | 42.0% | 25.2% |
| Longest Common Subsequence | Medium | 58.9% | 25.2% |
| Zigzag Conversion | Medium | 53.6% | 25.2% |
| Integer to Roman | Medium | 70.5% | 25.2% |
| Convert a Number to Hexadecimal | Easy | 53.3% | 25.2% |
| Count and Say | Medium | 62.3% | 25.2% |
| Longest Palindrome | Easy | 55.8% | 25.2% |
| Word Ladder | Hard | 44.9% | 25.2% |
| Rotate String | Easy | 65.1% | 25.2% |
| Multiply Strings | Medium | 43.6% | 25.2% |
