题解 | #输入n个整数，输出其中最小的k个#

import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.IntStream;

// 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 in = new Scanner(System.in);
    int n = in.nextInt();
    int k = in.nextInt();

    int[] a = new int[n];
    while (n > 0) {
      n--;
      a[n] = in.nextInt();
    }

    Arrays.sort(a);
    System.out.println(
      IntStream.of(a).limit(k).mapToObj(String::valueOf).collect(
        Collectors.joining(" ")));
  }
}