说明：  将1、2、3、4、5、6、7、8、9九个数字分成三组，每个数 字只能用一次，即每组三个数不允许有重复数字，也不许同其它 组的三个数字重复，要求每组中的三位数都组成一个平方数。
(1,2,3,4,5,6,7,8,9 nine figures will be split into three groups, each number can only be used once, the number three in each group is allowed to repeat the figures and not allowed with other groups to repeat the three figures, each of the requests are triple-digit the formation of a square.)