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Given a set of distinct integers, nums, return all possible subsets (the power set).

Note: The solution set must not contain duplicate subsets.

Example:

Input: nums = [1,2,3] Output: [ [3], [1], [2], [1,2,3], [1,3], [2,3], [1,2], [] ]

My code:

class Solution:
    def subsets(self, nums):
        """
        :type nums: List[int]
        :rtype: List[List[int]]
        """
        ans = [[]]
        for n in nums:
            ans = [prev + curr for prev in ans for curr in [[], [n]]]
        return ans
            

Solution: https://leetcode.com/problems/subsets/