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Grokking the Coding Interview Patterns in C#

Solution: Subsets II

Explore how to solve subsets problems with duplicate elements in C#. This lesson teaches you to use sorting and backtracking to generate all unique subsets efficiently, avoiding duplicates while understanding time and space trade-offs in your solutions.

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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 ...