Two-sum

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        std::vector<int> outputVector (2);
        int counter = nums.size();
        for (int i = 0; i < counter; ++i) {
        for (int j = i; j < counter; ++j) {
            if ((nums[i]+nums[j]) == target && i!=j){
                outputVector[0] = i;
                outputVector[1] = j;
                break;}}}
        return outputVector;}
};