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数字黑洞程序. 你输入一个不超过10的整数,然后按倍数从大到小排列,减去位数从小到大排列的数字.得出的数重复做上面的操作，最后会吸进一个数字．-digital black hole procedures. You enter a not exceed 10 Integer, and then arranged by multiples on average, less median from small to large with the figures. Come do a few repeat the above operation will eventually sucked into a figure.
