leetcode subsets
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class Solution {
public:
vector<vector<int>> res;
void dfs(vector<int>& path,int start,vector<int> nums)
{
if(start>nums.size()-1){
//cout<<"return"<<endl;
res.push_back(path);
return;
}
for(int i=0;i<=path.size()-1;i++)
{
if(path.size()==0)
break;
//cout<<path[i];
}
//cout<<endl;
res.push_back(path);
for(int i=start;i<=nums.size()-1;i++)
{
if(i>0&&nums[i]==nums[i-1])
continue;
path.push_back(nums[i]);
//cout<<"i:"<<i<<"nums[i]: "<<nums[i]<<endl;
dfs(path,i+1,nums);
path.pop_back();
}
}
vector<vector<int>> subsets(vector<int>& nums) {
sort(nums.begin(),nums.end());
vector<int> path;
dfs(path,0,nums);
returnres;
}
};
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