获取7个随机数

public static void main(String[] args)  {      StringBuilder s = new StringBuilder(" ");      int count = 0;      while (true)      {          int x = new Random().nextInt(33);          if (s.toString().contains(" "+x+" "))          {              continue;          }          else          {              s.append(x).append(" ");          }                    if (++count >= 7)          {              break;          }      }      System.out.println(s);  }