Permutations

Given an array nums of distinct integers, return all 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]]

Constraints:

• 1 <= nums.length <= 6
• -10 <= nums[i] <= 10
• All integers in nums are unique