package com.espeed.yxy.tool;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/***
 * 
 * @author xieyong
 * 获取随机码
 */
public class GetRondom {

	//生成随机码
	 public static List<String> getRandom(List<String> value){
		
		 List<String> newSmtpList=new ArrayList();
	        int n = value.size();  
	        Random rand = new Random();  
	        boolean[] bool = new boolean[n];  
	          
	        int num =0;  
	          
	        for (int i = 0; i<n; i++){  
	            do{  
	                //如果产生的数相同继续循环  
	                num = rand.nextInt(n);      
	            }while(bool[num]);       
	            bool[num] =true;  
	            newSmtpList.add(value.get(num));
	        }
			return newSmtpList;  
	         
	 }
	 
	 public static void main(String[] args) {
		 List<String> oldStr=new ArrayList<String>();
		 for(int i=0;i<3;i++){
			 oldStr.add("name"+i);
		 }
		 
		 List<String> newStr=getRandom(oldStr);
		 for(int j=0;j<newStr.size();j++){
			 System.out.println(newStr.get(j));
		 }
	}
}