| Longest Substring Without Repeating Characters | Medium | 38.5% | 79.4% |
| Longest Palindromic Substring | Medium | 37.4% | 75.8% |
| Valid Parentheses | Easy | 43.7% | 72.9% |
| Group Anagrams | Medium | 72.2% | 69.8% |
| Roman to Integer | Easy | 66.3% | 68.3% |
| Longest Common Prefix | Easy | 47.1% | 65.8% |
| Letter Combinations of a Phone Number | Medium | 65.5% | 62.5% |
| Word Search | Medium | 46.9% | 60.6% |
| Generate Parentheses | Medium | 78.3% | 60.2% |
| String to Integer (atoi) | Medium | 20.6% | 55.6% |
| Find the Index of the First Occurrence in a String | Easy | 46.3% | 54.6% |
| Reverse Words in a String | Medium | 55.6% | 52.4% |
| Integer to Roman | Medium | 70.5% | 52.2% |
| Merge Strings Alternately | Easy | 82.1% | 51.9% |
| Regular Expression Matching | Hard | 30.5% | 51.6% |
| Longest Substring with At Most K Distinct Characters | Medium | 49.9% | 50.3% |
| Maximum Difference Between Even and Odd Frequency II | Hard | 48.7% | 50.3% |
| Add Strings | Easy | 52.1% | 50.3% |
| Maximum Difference Between Even and Odd Frequency I | Easy | 60.7% | 50.3% |
| Edit Distance | Medium | 60.2% | 49.5% |
| Simplify Path | Medium | 50.0% | 49.5% |
| Restore IP Addresses | Medium | 55.3% | 48.8% |
| Basic Calculator | Hard | 46.6% | 47.2% |
| Serialize and Deserialize Binary Tree | Hard | 60.4% | 47.2% |
| Word Ladder | Hard | 44.9% | 47.2% |
| Longest Valid Parentheses | Hard | 38.1% | 47.2% |
| Decode Ways | Medium | 37.6% | 45.5% |
| Zigzag Conversion | Medium | 53.6% | 43.6% |
| Minimum Window Substring | Hard | 47.0% | 41.4% |
| Add Binary | Easy | 57.7% | 41.4% |
| Word Break | Medium | 49.1% | 41.2% |
| Ransom Note | Easy | 65.7% | 41.2% |
| Wildcard Matching | Hard | 31.4% | 39.0% |
| Multiply Strings | Medium | 43.6% | 37.7% |
| Text Justification | Hard | 50.5% | 37.7% |
| Length of Last Word | Easy | 58.3% | 37.7% |
| Interleaving String | Medium | 43.5% | 36.2% |
| Encode and Decode Strings | Medium | 51.2% | 36.0% |
| Valid Anagram | Easy | 67.8% | 36.0% |
| Isomorphic Strings | Easy | 48.1% | 36.0% |
| Is Subsequence | Easy | 48.9% | 32.8% |
| Count and Say | Medium | 62.3% | 31.1% |
| Substring with Concatenation of All Words | Hard | 34.0% | 26.7% |
