My Own Notes: Leetcode: Subsets II Given a collection of integers that might contain duplicates, S, ...

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My Own Notes: Leetcode: Subsets II

Given a collection of integers that might contain duplicates, S, return all possible subsets.

Note:

Elements in a subset must be in non-descending order.

The solution set must not contain duplicate subsets.

For example,If S = [1,2,2], a solution is:

[

[2],

[1],

[1,2,2],

[2,2],

[1,2],

[]

]

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My Own Notes: Leetcode: Subsets II

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