class Solution {
public:
    vector<int> getLeastNumbers_Solution(vector<int> input, int k) {
        //排个序，输出前k个
        vector<int>  res;

        sort(input.begin(),input.end());  //排个序

        for(int i=0;i<k;i++)  res.push_back(input[i]);

        return res;
    }
};