Permutations

IF
AlgoAxiomStaff Engineers
JSTS
Medium20 mins

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

Examples

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]]

Explanation: There are 3! = 6 permutations of three distinct numbers.

Example 2:

Input: nums = [0,1]

Output: [[0,1],[1,0]]

Explanation: There are 2! = 2 permutations of two distinct numbers.

Example 3:

Input: nums = [1]

Output: [[1]]

Explanation: There is only one permutation of a single element.

Constraints

  • 1 <= nums.length <= 6
  • -10 <= nums[i] <= 10
  • All the integers of nums are unique
Source: Subsets pattern — AlgoAxiom
JavaScript
Test Case 1
root = [1, 2, 3]
Test Case 2
root = [1, 2, 3, 4, 5]
Idle