#15947: DP想法


hshua (hshua)

School : 新北市立林口高級中學
ID : 52506
IP address : [125.228.147.181]
Last Login :
2025-02-08 15:03:58
a623. 3. Combination -- HP CodeWars2007 | From: [125.227.237.177] | Post Date : 2018-11-07 11:44

f(m,m)=1

f(n,m)=n/(n-m)*f(n-1, m)

 

n=10, m=5 ==>

F(0)=f(m,m)=1
F(1)=f(m+1,m)= (m+1)/1 * 1 = 6
F(2)=f(m+2,m)= (m+2)/2 * 6 = 21
...

 
#23710: Re:DP想法


gianhuaensh@gmail.com (沈登獻)

School : No School
ID : 105257
IP address : [140.118.74.7]
Last Login :
2020-12-19 22:53:10
a623. 3. Combination -- HP CodeWars2007 | From: [140.118.74.7] | Post Date : 2020-12-11 15:57

謝謝

 
 
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