在不使用stringbuilder或power工具的情况下对字符串进行随机化和混洗

import java.util.Random;

public class StringShuffler {
    public static String shuffleString(String input) {
        // 将字符串转换为字符数组
        char[] chars = input.toCharArray();
        Random random = new Random();

        for (int i = 0; i < chars.length; i++) {
            // 生成随机索引
            int randomIndex = random.nextInt(chars.length);

            // 交换字符位置
            char temp = chars[i];
            chars[i] = chars[randomIndex];
            chars[randomIndex] = temp;
        }

        // 将字符数组转换为字符串
        return new String(chars);
    }

    public static void main(String[] args) {
        String input = "Hello World";
        String shuffledString = shuffleString(input);
        System.out.println(shuffledString);
    }
}