package com.xxd.demo;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

public class StringSort {
    // 创建Random对象
    public static Random random = new Random();

    public static void main(String[] args) {

        // 创建List<String>
        List<String> strs = new ArrayList<String>();
        // 创建一个字符串，用于存储临时字符串
        String str;
        // 插入十条记录
        for (int i = 0; i < 10; i++) {
            // 生成一条随机的字符串
            do {
                str="";
                for (int j = 0; j < random.nextInt(10); j++) {
                    str += generateChar();
                }
            } while (strs.contains(str));

            strs.add(str);// 将字符串添加到列表中
        }
        System.out.println("--------------排序前------------------");
        for (String string : strs) {
            System.out.println("元素:" + string);
        }
        System.out.println("--------------排序后------------------");
        Collections.sort(strs);
        for (String string : strs) {
            System.out.println("元素:" + string);
        }

    }

    // 生成字符
    public static char generateChar() {
        int s = random.nextInt(3);
        switch (s) {
        case 0:
            return (char) (48 + random.nextInt(10));
        case 1:
            return (char) (65 + random.nextInt(26));
        case 2:
            return (char) (97 + random.nextInt(26));
        }
        return 0;
    }
}