class Solution {
public:
vector<int> getLeastNumbers_Solution(vector<int> input, int k) {
sort(input.begin(), input.end());//运用sort函数排序
vector<int> res;
for (int i = 0; i < k; i ++ ) res.push_back(input[i]);//将前K个数按序储存在容器中
return res;
}
};