Given an array `nums` of distinct integers, return all the possible **permutations**. You can return the answer in any order.
**Example 1:**
```
Input: nums = [1,2,3]
Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]
```
**Example 2:**
```
Input: nums = [0,1]
Output: [[0,1],[1,0]]
```
**Example 3:**
```
Input: nums = [1]
Output: [[1]]
```