| Moving Average from Data Stream | Easy | 80.2% | 100.0% | ArrayDesignQueue+1 |
| Kth Largest Element in an Array | Medium | 68.8% | 84.0% | ArrayDivide and ConquerSorting+2 |
| Longest Substring Without Repeating Characters | Medium | 38.5% | 84.0% | Hash TableStringSliding Window |
| Analyze User Website Visit Pattern | Medium | 44.2% | 84.0% | ArrayHash TableString+1 |
| Leetcodify Similar Friends | Hard | 43.1% | 80.5% | Database |
| Leetcodify Friends Recommendations | Hard | 28.6% | 80.5% | Database |
| Two Sum | Easy | 57.1% | 76.1% | ArrayHash Table |
| Valid Parentheses | Easy | 43.7% | 76.1% | StringStack |
| Sliding Window Median | Hard | 38.9% | 66.8% | ArrayHash TableSliding Window+1 |
| Ransom Note | Easy | 65.7% | 56.8% | Hash TableStringCounting |
| Fibonacci Number | Easy | 73.9% | 56.8% | MathDynamic ProgrammingRecursion+1 |
| Find Median from Data Stream | Hard | 54.2% | 56.8% | Two PointersDesignSorting+2 |
| Maximum Depth of Binary Tree | Easy | 77.9% | 48.9% | TreeDepth-First SearchBreadth-First Search+1 |
| Valid Palindrome | Easy | 52.8% | 48.9% | Two PointersString |