Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.
1 <= nums.length <= 6-10 <= nums[i] <= 10nums are uniquenums = [1,2,3][[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]nums = [0,1][[0,1],[1,0]]nums = [1][[1]]