package imooc;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;
public class cTest {
public void sortTest(){
List<String> list=new ArrayList<String>();
Random random=new Random();
for(int i=0;i<10;i++)//十条字符串
{
StringBuilder string=new StringBuilder();
do
{int k=random.nextInt(9)+1;//随机生成长度,防止生成空字符串
for(int n=0;n<k;n++)//往字符串里随机添加字符
{
int c=random.nextInt(10);
string.append(c);
}
}
while(list.contains(string));
list.add(string.toString());
}
//打印
System.out.println("----------排序前----------");
for(String a:list){
System.out.println(a);
}
Collections.sort(list);//排序
System.out.println("");
//打印
System.out.println("----------排序后----------");
for(String a:list){
System.out.println(a);
}
}
public static void main(String[] args) {
// TODO Auto-generated method stub
cTest test=new cTest();
test.sortTest();
}
}