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推出了f(n)=f(n-1)+f(n-3)+f(n-4)，但是接着怎么做？

Posted by cathy at 2005-06-27 18:31:44 on Problem 2440

Followed by:

转化成矩阵乘方，O(logn)地算 (0) frkstyc 2005-06-27 18:34:02
- 用叠代,每次推两步,再叠代,没次推4步,然后用一个系数矩阵存放系数. (0) queyue2004 2005-06-27 19:18:25
  - 你这么搞烦不烦啊 (0) frkstyc 2005-06-27 19:25:02
如何把递推式子，变成矩阵？ (0) bluewind 2007-10-09 22:55:05
- 像fibnacci数列那样就行了吧? (0) limingfei 2007-10-09 23:30:30
- Re:怎么做呢 (0) Methane 2007-10-10 01:37:43
  - Re:怎么做呢 (208) hust07p43 2007-10-10 09:01:04
    - Re:多谢 (226) Methane 2007-10-10 09:41:14
    - 非常感谢 (226) bluewind 2007-10-10 13:30:15

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