Two Sum

class Solution {
public:
vector<int> twoSum(vector<int>& nums, int target) {
vector<int> res(2,0);
//sort(nums.begin(), nums.end());
int length = int(nums.size());
int tmp = 0;
for (int i=0; i<length; i++) {
tmp = target-nums[i];
for (int j=i+1; j<length; j++) {
if (nums[j]==tmp) {
res[0]=i;
res[1]=j;
return res;
}
}
}
return res;
}
};