| # | Time Complexity | Space Complexity | Description | Submission |
|---|---|---|---|---|
| 1 | O(n) | O(n) | Hashmap | Submission |
| 2 | O(n log n) | O(n) | 2 pointers | Submission |
| 3 | O(n) | O(n) | Similar to #1 but use Hashset | Submission |
| # | Time Complexity | Space Complexity | Description | Submission |
|---|---|---|---|---|
| 1 | O(n) | O(n) | Hashmap | Submission |
| 2 | O(n log n) | O(n) | 2 pointers | Submission |
| 3 | O(n) | O(n) | Similar to #1 but use Hashset | Submission |