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Grokking the Coding Interview Patterns in JavaScript

Solution: Subsets II

Explore how to solve the unique subsets problem for arrays containing duplicates by applying sorting and backtracking. Understand the step-by-step recursive approach that efficiently avoids duplicate subsets while building all possible combinations. This lesson equips you with a practical algorithm and complexity analysis for effective coding interview preparation.

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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 <= ...