# Two Sum Emma C++ Note
## Programming Language: C++
### Back to [Leetcode Blind 75 Practice Note](/xh5b5HXPTHGz_jwwymNKlw)
[Leetcode: Two Sum](https://leetcode.com/problems/two-sum/)
* 新學習到的是 vector<int> function 失敗要回傳的時候，可以直接寫：

return {};

完整程式碼如下：

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {

        vector<int> outNums(2, 0);

        for (int i = 0; i < nums.size(); ++i)
        {
            for(int j = i+1; j < nums.size(); ++j)
            {
                if (nums[i]+nums[j] == target)
                {
                    outNums[0] = i;
                    outNums[1] = j;

                    return outNums;
                }
            }
        }

        return {};
    }
};