虽然是标题党，但是功能却是能让双色球最多只有2个球号码相同，不知道没中过双色球或者只有2个双色球的小伙伴是不是买了假的双色球了啊。

代码如下：class Doubleball{public static void main(String[] args){            String pool[]={"01","02","03","04","05","06"         ,"07","08","09","10","11","12","13","14",        "15","16","17","18","19","20","21","22",        "23","24","25","26","27","28","29","30",        "31","32","33"};                Random rad=new Random();                String str=new String[6];                int index=0;                int i=0                boolean used[]=new boolean[pool.length];                while (index

used数组已经将前6个中相同的跳过了，因此最多只能出现一个号码相同最终。