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Solution: Subsets II

Explore how to solve the subsets problem with duplicates by applying backtracking and depth-first search. Understand sorting to manage duplicates, and learn to build unique subsets efficiently. This lesson helps you implement a DFS approach that avoids repeated subsets, preparing you for similar coding interview challenges.

Statement

Given an integer array nums, that can contain duplicate elements,  return all possible subsets while ensuring that each subset is unique. The output must include unique subsets, and you may return them in any order.

Constraints:

  • 1<=1 <= nums.length <=10<= 10

  • 10<=-10 <= ...