福尔摩灰_Java入门第三季_随机字符串排序

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

public class Test {

    public void test1() {
        List<String> sl = new ArrayList<String>();
        Random random = new Random();
        int length, temp;
        for (int i = 0; i < 10; i++) {// 循环添加字符串
            length = random.nextInt(9) + 1;// 生成字符串长度
            StringBuilder str = new StringBuilder();//

            for (int j = 0; j < length; j++)// 添加字符到str中
            {
                do {
                    temp = random.nextInt(124);
                } while (!(temp > 47 && temp < 58) && !(temp > 64 && temp < 91) && !(temp > 96 && temp < 123));
                str.append((char) temp);
            }

            sl.add(str.toString());
        }

        System.out.println("-------------排序前--------------");
        for (String string : sl) {
            System.out.println("元素：" + string);
        }
        Collections.sort(sl);
        System.out.println("-------------排序后--------------");
        for (String string : sl) {
            System.out.println("元素：" + string);
        }
    }

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        Test ts = new Test();
        ts.test1();
    }

}