输入整型数组和排序标识，对其元素按照升序或降序进行排序

import java.util.Scanner;

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        while (sc.hasNext()) {
            int n = sc.nextInt();

            Integer[] arr = new Integer[n];

            for (int i = 0; i < n; i++) {
                arr[i] = sc.nextInt();
            }

            int k = sc.nextInt();

            if (k == 0) {
                Arrays.sort(arr);
            }

            if (k == 1) {
                Arrays.sort(arr, new Comparator<Integer>() {
                    @Override
                    public int compare(Integer o1, Integer o2) {
                        return o2 - o1;
                    }
                });
            }

            for (int i = 0; i < arr.length; i++) {
                System.out.print(arr[i] + " ");
            }

            System.out.println();
        }
    }
}