/*
 * 随机产生13个0~51没有重复的随机数
 * class : arrayok
 *
 */
 public class arrayok
 {
     public static void main(String args[])
     {
         int suit[] = new  int[13]; //存储13个随机数

         boolean sw[] = new  boolean[52]; //随机数存在。则为真，否则为假

         int key = 0;
         for(int i = 0; i  < suit.length; i++)
         {
             while(true)
             {
                 key  = (int)(Math.random()*52);
                 if(sw[key] == false){
                     break;
                 }
             }
             suit[i] = key;
             sw[key] = true;
         }
         for(int i = 0; i  < suit.length; i++)
         {
             System.out.print(suit[i]+" ");
         }
         System.out.print("\n");
     }
 }