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Permutations

MediumBacktracking

Given an array nums of distinct integers, return all the possible permutations. You can return the answer in any order.

Example:

Input: nums = [1,2,3]
Output: [[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],[3,2,1]]

Constraints:

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