输入字符串正序排列，倒叙打印

import java.util.Arrays;
import java.util.Scanner;

public class ArrayTest {

    public static void main(String[] args) {
        System.out.print("请输入要排序字符串：");
        Scanner sc = new Scanner(System.in);
        String str = sc.next();             //获取屏幕键盘输入
        char[] chars = str.toCharArray();  //将获取到的字符串转换为字符数组
        Arrays.sort(chars);                //对数组进行排序
        for (int i = chars.length-1; i >=0 ; i--) {    //实现倒叙打印
            System.out.print(chars[i]);
            }
        }
    }