獲取7個隨機數

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);

}</pre>
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