class Solution { public: vector twoSum(vector& nums, int target) { vector sum; for(auto i = 0; i < nums.size(); i++) { for(auto j = i+1; j < nums.size(); j++) { if(i == j) continue; if(nums[i] + nums[j] != target) continue; sum.push_back(i); sum.push_back(j); return sum; } } return sum; } };