彩票双色球生成器

 public static void main(String[] args) {
  String []balls=gen();
  System.out.println(Arrays.toString(balls));
  
 }
 public static String[] gen(){
  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"};
  boolean[]used=new boolean[pool.length];
  String[]balls=new String[6];
  int index=0;
  Random random=new Random();
  int i;
  do{
   i=random.nextInt(pool.length);
   if(used[i]){continue;}
   balls[index++]=pool[i];
   used[i]=true;
  }while(index!=balls.length);
  Arrays.sort(balls);
  balls=Arrays.copyOf(balls,balls.length+1);
  balls[balls.length-1]=pool[random.nextInt(16)];
  return balls;
 }