Solution: Permutations II

Let’s try to solve the Permutations II problem using the Subsets pattern.

Statement

For a given integer list, nums, which might contain duplicates, return all possible unique permutations derived from nums.

Note: The order in which the permutations appear doesn’t matter.

Constraints:

  • 11 \leq nums.length 8\leq 8

  • 10-10 \leq nums[i] 10\leq 10 ...