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Grokking the Coding Interview Patterns in JavaScript

Solution: Subsets II

Explore how to generate all unique subsets of an integer array containing duplicates by using backtracking combined with sorting. Understand how to skip duplicates during recursion to ensure each subset is unique and how to manage time and space complexity in this approach.

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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 <= nums[i] <=10<= 10 ...