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Grokking the Coding Interview Patterns in Go

Solution: Subsets II

Explore the backtracking approach to generate all unique subsets from an array that may contain duplicates. Understand the use of sorting, recursion, and skipping duplicates to efficiently produce the complete power set without repetition.

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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:

  • 1<=1 <= nums.length <=10<= 10

  • −10<=-10 <= ...