题解 | 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.Arrays;
// 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.hasNextInt()) {
            int a = sc.nextInt();
            int [] arr = new int [a];
            for (int i = 0; i < a; i++) {
                arr[i] = sc.nextInt();
            }
            int c = sc.nextInt();
            Arrays.sort(arr);
            if (c == 0) {
                for (int i : arr) {
                    System.out.print(i + " ");
                }
            } else {
                for (int i = arr.length - 1; i >= 0 ; i--) {
                    System.out.print(arr[i] + " ");
                }
            }
        }
    }
}