Arrays Exercise: string in reverse order

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package cn.learn.day08.demo04;

import java.util.Arrays;

/*
题目：
请使用Arrays相关的API，将一个随机字符串中的所有字符升序排列，并倒序打印。
 */
public class Demo02ArraysPractise {

    public static void main(String[] args) {
        String str = "asv76agfqwdfvasdfvjh";

        // 如何进行升序排列：sort
        // 必须是一个数组，才能用Arrays.sort方法
        // String --> 数组，用toCharArray
        char[] chars = str.toCharArray();
        Arrays.sort(chars); // 对字符数组进行升序排列

        // 需要倒序遍历
        for (int i = chars.length - 1; i >= 0; i--) {
//            System.out.println(chars[i]);
            System.out.print(chars[i]);
        }
    }

}