| Word Search II | Hard | 38.1% | 87.5% |
| Find All Anagrams in a String | Medium | 53.3% | 87.5% |
| Minimum Window Substring | Hard | 46.9% | 87.5% |
| Number of Ways to Form a Target String Given a Dictionary | Hard | 56.6% | 75.0% |
| Basic Calculator | Hard | 46.5% | 75.0% |
| String Transformation | Hard | 26.6% | 75.0% |
| Count Vowel Substrings of a String | Easy | 72.8% | 75.0% |
| Step-By-Step Directions From a Binary Tree Node to Another | Medium | 56.4% | 75.0% |
| Regular Expression Matching | Hard | 30.4% | 62.5% |
| Time Based Key-Value Store | Medium | 49.7% | 62.5% |
| Remove Sub-Folders from the Filesystem | Medium | 78.6% | 62.5% |
| Basic Calculator II | Medium | 46.6% | 50.0% |
| Integer to English Words | Hard | 34.8% | 50.0% |
| Design Add and Search Words Data Structure | Medium | 48.1% | 50.0% |
| Remove K Digits | Medium | 36.4% | 50.0% |
| Simplify Path | Medium | 50.0% | 50.0% |
| Reverse Only Letters | Easy | 68.1% | 50.0% |
| Evaluate Division | Medium | 64.0% | 37.5% |
| Maximum Number of Removable Characters | Medium | 46.8% | 37.5% |
| Remove Invalid Parentheses | Hard | 49.8% | 37.5% |
| Word Break | Medium | 49.1% | 37.5% |
| Implement Trie (Prefix Tree) | Medium | 69.2% | 37.5% |
| Roman to Integer | Easy | 66.2% | 37.5% |
| Word Search | Medium | 46.8% | 37.5% |
| Alert Using Same Key-Card Three or More Times in a One Hour Period | Medium | 46.1% | 37.5% |