Grokking the Coding Interview: Patterns for Coding Questions
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Solution: Subsets With Duplicates
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Problem Statement

Given a set of numbers that might contain duplicates, find all of its distinct subsets.

Example 1:

Input: [1, 3, 3]
Output: [], [1], [3], [1,3], [3,3], [1,3,3]

Example 2:

Input: [1, 5, 3, 3]
Output: [], [1], [5], [3], [1,5], [1,3], [5,3], [1,5,3], [3,3], [1,3,3], [3,3,5], [1,5,3,3]

Constraints:

  • 1 <= nums.length <= 10
  • -10 <= nums[i] <= 10

Solution

This problem follows the Subsets pattern and we can follow a similar Breadth First Search (BFS) approach. The only additional thing we need to do is handle duplicates

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