All Problem's Solution of September 2021 Challenge
| Day | Problem | Language | Level | Problem | Solution |
|---|---|---|---|---|---|
| 1 | Array Nesting | Java | Medium | Problem-1 | Solution-1 |
| 2 | Unique BSTs-ii | Java | Medium | Problem-2 | Solution-2 |
| 3 | - | Java | - | - | - |
| 4 | Sum of Distances in Tree | Java | Hard | Problem-4 | Solution-4 |
| 5 | Orderly Queue | Java | Hard | Problem-5 | Solution-5 |
| 6 | Slowest Key | Java | Easy | Problem-6 | Solution-6 |
| 7 | Reverse Linked List | Java | Easy | Problem-7 | Solution-7 |
| 8 | Shifting Letters | Java | Medium | Problem-8 | Solution-8 |
| 9 | Largest Plus Sign | Java | Medium | Problem-9 | Solution-9 |
| 10 | Arithmetic Slices II - Subsequence | Java | Hard | Problem-10 | Solution-10 |
| 11 | Basic Calculator | Java | Hard | Problem-11 | Solution-11 |
| 12 | Java | ||||
| 13 | Java | ||||
| 14 | Java | ||||
| 15 | Java | ||||
| 16 | Java | ||||
| 17 | Java | ||||
| 18 | Java | ||||
| 19 | Java | ||||
| 20 | Java | ||||
| 21 | Java | ||||
| 22 | Java | ||||
| 23 | Java | ||||
| 24 | Java | ||||
| 25 | Java | ||||
| 26 | Java | ||||
| 27 | Java | ||||
| 28 | Java | ||||
| 29 | Java | ||||
| 30 | Java |