验证卡布列克数

卡布列克常数是一个非常简单的数字，共有两个，一个是495，一个是6174。这两个数字都具有特殊的规律，对于任何各位数字不全相同的三位数字或四位数字，都可以通过一定规律的运算得到这两个数字。其运算规律为：首先，将所选数的各位数字从大到小排列组成一个新的三位数x，然后，再将各位数字按从小到大排列得到另一个新的三位数y，然后，使用大的数字减去小的数字：x-y z。得到差值z之后，对得到的结果z继续执行上述运算，直到每次都得到相同的数字为止。-Cabo Cabo lek lek verification number is a very simple constant numbers, there are two, one is 495, one is 6174. Both figures have a special law for any incomplete digits of the same three-digit or four-digit number can be obtained by certain rules of operation of these two figures. Its operation rules: First, the digits of the selected numbers in descending order to form a new three-digit number x, then, and then you press the numbers in ascending order to get another new three-digit y, then using large numbers subtract small numbers: xy　 z. After obtaining a difference z, z of the results obtained to continue the implementation of the operation, until the same numbers each time have been reached.