计算机编程题 - 找最小偶数位对称平方数 (ZT)

对称数是指12321之类的、颠倒书写顺序仍不变的自然数。对称平方数是指它是对称数同时还是某个自然数的平方。有人证实698896是最小偶数位对称平方数(=836^2)。请各位高手编一程序，找出另外两个最小偶数位对称平方数。
--- This is a good question by '巡天剑客', I'm too late to back here. But, my SAS Programm used time 1:36:17 to got 4 solutions. They are as following:

Digit=6 Root=836 Symmetric Square=698896
Digit=12 Root=798644 Symmetric Square=637832238736
Digit=16 Root=64030648 Symmetric Square=4099923883299904
Digit=22 Root=83163115486 Symmetric Square=6916103777337773016196

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• 回复：计算机编程题 - 找最小偶数位对称平方数 (ZT) -Blue_Diamond- ♂ (3518 bytes) () 12/10/2010 postreply 00:59:51

• 回复：回复：计算机编程题 - 找最小偶数位对称平方数 (ZT) -Blue_Diamond- ♂ (5181 bytes) () 12/12/2010 postreply 00:33:11

• 回复：回复：回复：计算机编程题 - 找最小偶数位对称平方数 (ZT) -Blue_Diamond- ♂ (6509 bytes) () 12/14/2010 postreply 09:47:50

• 最小的显然是0；其次是1，4，9。 -qiasini- ♂ (21 bytes) () 12/11/2010 postreply 22:21:55

• 最小偶数位对称平方数，您那个是奇数位。 -皆兄弟也- ♂ (0 bytes) () 12/12/2010 postreply 00:41:29

• 484, -commentate- ♂ (0 bytes) () 12/18/2010 postreply 05:44:29

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