题目

import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.nextLine();

		Integer[] res = new Integer[n+1];//使用Integer类型
		for(int i=1;i<=n;i++) {
			res[i] = sc.nextInt();
		}

		Arrays.sort(res,1,n+1);//从下标1开始
		for(int i=1;i<=n;i++) {
			System.out.print(res[i]+" ");
		}
		System.out.println();

		Arrays.sort(res,1,n+1,new Comparator<Integer>() {
			@Override
			public int compare(Integer o1, Integer o2) {
				return o2-o1;
			}
		});//从大到小排序
		for(int i=1;i<=n;i++) {
			System.out.print(res[i]+" ");
		}		
	}
}