| Valid Parentheses | Easy | 43.7% | 76.5% |
| Can Place Flowers | Easy | 29.1% | 72.4% |
| Shortest Word Distance | Easy | 66.2% | 63.9% |
| Maximum Depth of Binary Tree | Easy | 77.9% | 63.9% |
| Isomorphic Strings | Easy | 48.1% | 62.1% |
| Symmetric Tree | Easy | 60.8% | 61.0% |
| Valid Perfect Square | Easy | 44.7% | 60.0% |
| Find Pivot Index | Easy | 62.1% | 59.1% |
| Second Minimum Node In a Binary Tree | Easy | 46.0% | 58.8% |
| Merge Two Sorted Lists | Easy | 68.0% | 54.9% |
| Two Sum | Easy | 57.1% | 53.4% |
| Sqrt(x) | Easy | 41.4% | 53.2% |
| Two Sum III - Data structure design | Easy | 39.1% | 50.0% |
| Design HashMap | Easy | 66.4% | 47.4% |
| Intersection of Two Linked Lists | Easy | 63.2% | 39.7% |
| Find Smallest Letter Greater Than Target | Easy | 58.9% | 39.7% |
| Merge Sorted Array | Easy | 54.4% | 37.1% |
| Fizz Buzz | Easy | 75.3% | 33.0% |
| Intersection of Two Arrays | Easy | 77.5% | 33.0% |
| Sum of All Odd Length Subarrays | Easy | 83.9% | 29.6% |
| Moving Average from Data Stream | Easy | 80.2% | 29.6% |
| Diameter of Binary Tree | Easy | 65.1% | 27.8% |
| Same Tree | Easy | 66.7% | 27.8% |
| Minimum Time to Type Word Using Special Typewriter | Easy | 78.4% | 20.8% |
| Best Time to Buy and Sell Stock | Easy | 56.4% | 20.8% |
