package com.imooc.collection;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Random;

import java.util.Scanner;

public class CollectionsTest 

{

public void testStringSort2()

{

List<String>stringList2=new ArrayList<String>();

String[] str1= {"a","b","c","d","e","f","g","h","i","g","k","m","n","o","p",

"q","r","s","t","u","v","w","x","y","z","1","2","3","4","5","6","7",

"8","9","0"};

String str=new String();//str存放生成的单个字符串

for(int i=0;i<10;i++)//外层循环决定生成十个随机的字符串

{

String str2=new String();//str2存放生成的随机字符串

int k;

k=1+(int)(Math.random()*(10+1-1));//生成随机字符串的长度k

for(int j=0;j<k;j++)//内层循环生成一个随机的字符串

{

int z;          //在字符串数组str1中随机选择字符串str1[z]

z=(int)(Math.random()*35);

str=str1[z];

str2=str2+str;

}

stringList2.add(str2);//将str2传入stringList2中

}

System.out.println("------------排序前------------");

for (String string : stringList2) 

{

System.out.println("字符串："+string);

}

Collections.sort(stringList2);

System.out.println("-------------排序后-----------");

for (String string : stringList2) 

{

System.out.println("字符串："+string);

}

}

public static void main(String[] args)

 {

CollectionsTest ct=new CollectionsTest();

ct.testStringSort2();

}

}