Solution: Subsets II
Explore the backtracking technique to generate all unique subsets from an integer array containing duplicates. Understand how sorting and depth-first search help avoid duplicate subsets by skipping repeated values at the same recursion level. Gain insight into the algorithm's time and space complexity as you apply this approach effectively.
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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:
nums.length...