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Re:请教有关如何使循环次数变小（内详）

Posted by frkstyc at 2005-05-11 11:09:37 on Problem 1026
In Reply To:请教有关如何使循环次数变小（内详） Posted by:leoyonn at 2005-05-11 11:05:50 
把置换分解成循环，例：
(1 2 3 4)分解成(1 2 4)(3)
(4 1 3 2)　　　(4 1 2)(3)
不过我觉得假如真的想不明白就不要做这个，4选2为什么非要死抠这个？
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