two sum

#include <string>
#include <stack>
#include <vector>
#include <map>
using namespace std;
vector<int> twoSum(vector<int>& nums, int target) {
int len = nums.size();
map<int,int> temp;
vector<int> re;
for (int i = 0; i < len; i++) {
auto it = temp.find(target - nums[i]);
if (it!= temp.end())
{
re.push_back(it->second);
re.push_back(i);
return re;
}
else temp[nums[i]] = i;
}
}
int main() {
vector<int> nums = { 2, 7, 11, 15 };
int target = 9;
vector<int> re = twoSum(nums, target);
}