All companies
C3 Ai
2 Easy8 Medium1 Hard11 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 281 | Zigzag Iterator | Medium | |
| 994 | Rotting Oranges | Medium | |
| 42 | Trapping Rain Water | Hard | |
| 54 | Spiral Matrix | Medium | |
| 11 | Container With Most Water | Medium | |
| 20 | Valid Parentheses | Easy | |
| 56 | Merge Intervals | Medium | |
| 976 | Largest Perimeter Triangle | Easy | |
| 22 | Generate Parentheses | Medium | |
| 322 | Coin Change | Medium | |
| 134 | Gas Station | Medium |