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# Subsets LeetCode Solution

## Problem – Subsets LeetCode Solution

Given an integer array `nums` of unique elements, return all possible subsets (the power set).

The solution set must not contain duplicate subsets. Return the solution in any order.

Example 1:

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

Example 2:

``````Input: nums = 
Output: [[],]
``````

Constraints:

• `1 <= nums.length <= 10`
• `-10 <= nums[i] <= 10`
• All the numbers of `nums` are unique.

### Subsets LeetCode Solution in Python

``````class Solution(object):
def subsets(self, nums):
nums.sort()
result = [[]]
for num in nums:
result += [i + [num] for i in result]
return result
``````

### Subsets LeetCode Solution in Java

``````public class Solution {
public List<List<Integer>> subsets(int[] S) {
List<List<Integer>> res = new ArrayList<>();

Arrays.sort(S);
for(int i : S) {
List<List<Integer>> tmp = new ArrayList<>();
for(List<Integer> sub : res) {
List<Integer> a = new ArrayList<>(sub);
}
}
return res;
}
}
``````

### Subsets LeetCode Solution in C++

``````class Solution {
public:
vector<vector<int> > subsets(vector<int> &S) {
vector<vector<int> > res(1, vector<int>());
sort(S.begin(), S.end());

for (int i = 0; i < S.size(); i++) {
int n = res.size();
for (int j = 0; j < n; j++) {
res.push_back(res[j]);
res.back().push_back(S[i]);
}
}

return res;
}
};
``````
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