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Re:这题。。公式怎么得出来的?In Reply To:这题。。公式怎么得出来的? Posted by:Roba at 2006-11-06 16:16:03 > 一个循环的时候是(n-1)!,两个的时候怎么算? 有点问题哦 n=4时, 按照这个式子算出来的是6 实际上是9 2 1 4 3 2 3 4 1 2 4 1 3 3 1 4 2 3 4 1 2 3 4 2 1 4 1 2 3 4 3 1 2 4 3 2 1 Followed by: Post your reply here: |
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