class Solution {
public:
vector<int> getLeastNumbers_Solution(vector<int> input, int k) {
sort(input.begin(), input.end()); //将input排序
vector<int> a;
for(int i = 0; i < k; i++) a.push_back(input[i]); //将input前k个赋值给a
return a; //返回a
}
};