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Re:谁能给一个按 频率/时长 排序的方法的证明?我是猜的。。。证不出来 谢谢

Posted by cuiaoxiang at 2005-10-23 15:22:34 on Problem 2675
In Reply To:谁能给一个按 频率/时长 排序的方法的证明?我是猜的。。。证不出来 谢谢 Posted by:boymit at 2005-10-23 14:58:16
> rt
假设某个排列使之最大。
证明任意相邻二个都不能交换。

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