题解 | #活用Comparator#

import java.util.Scanner;
import java.util.*;
// 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);
        while (in.hasNext()){
            int nums = in.nextInt();
            Integer[] tar=new Integer[nums];
            for (int i = 0; i <nums ; i++) {
                tar[i]=in.nextInt();
            }
            int method = in.nextInt();
            Arrays.sort(tar, new Comparator<Integer>() {
                @Override
                public int compare(Integer o1, Integer o2) {
                    if (method==0){
                        return o1-o2;
                    }else {
                        return o2-o1;
                    }
                }
            });
            for (int i = 0; i <nums ; i++) {
                System.out.print(tar[i]+" ");
            }
        }
    }
}