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Re:我来解释一下

Posted by chqch172443 at 2008-06-29 09:53:18 on Problem 1664
In Reply To:我来解释一下 Posted by:zyz at 2007-06-09 18:47:01

> f(m, n) = f(m-n, n) + f(m, n-1)
> 
> f(m, n): 把m个苹果放到n个盘子中的方法数
> f(m, n-1): 把m个苹果放到n-1个盘子中的方法数(其中至少有一个空盘子)
> f(m-n, n): 把m个苹果放到n个盘子中,而且每个盘子中都有苹果(先拿n个出来,等m-n个放好了,然后每个盘子放一个)
不行了，数学太太太烂了，看了这个还是没看懂...

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Re:我来解释一下 (28) yj9264543 2008-07-29 16:55:15

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