#Java 随机产生数

package jihe;

import java.util.*;
public class SortTest {
	public List <String> sortlist;
	public SortTest(){
	this.sortlist=new ArrayList();	
	}
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		SortTest test=new SortTest();
		test.Test();
	}
	
public void Test(){
	
	String k;
		for(int i=0;i<100;i++){
		do{
			k=this.save();
		}while(sortlist.contains(k));
		sortlist.add(k);
		System.out.println("添加了："+k);
	}
	System.out.println("--------排序前-------");
	for(String di:sortlist){
		System.out.println(di);
	}
	System.out.println("--------排序后-------");
    Collections.sort(sortlist);
    for(String di:sortlist){
		System.out.println(di);
	}
}
public String save(){
	StringBuilder ab=new StringBuilder("qwertyuiopasdfghjklzxcvbnm123456789");
	StringBuilder bc=new StringBuilder();
	Random suiji=new Random();
	int j = suiji.nextInt(10)+1;
	for(int i=0;i<j;i++){
		char hy=ab.charAt(suiji.nextInt(ab.length()));
		bc.append(hy);			
	}
	
	return bc.toString();
	
}
}