题解 | #输入n个整数，输出其中最小的k个#

import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()){
            int n = sc.nextInt();
            int k = sc.nextInt();
            List<Integer> alist = new ArrayList<>();

            for (int i = 0; i < n; i++) {
                int in = sc.nextInt();
                alist.add(in);
            }

            Collections.sort(alist);
            for (int i = 0; i < k; i++) {
                System.out.print(alist.get(i) + " ");
            }
        }
    }
}