题解 | #输入整型数组，对其元素按照升序或降序进行排序#

使用了List

import java.util.ArrayList;
import java.util.Comparator;
import java.util.Scanner;
import java.util.stream.Collectors;

// 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();
        ArrayList<Integer> val = new ArrayList<>();
        while (n-- > 0) {
            val.add(in.nextInt());
        }
        val.sort(in.nextInt() == 0 ?  Comparator.naturalOrder() : Comparator.reverseOrder());
        System.out.println(val.stream().map(String::valueOf).collect(Collectors.joining(" ")));
    }
}