24 Aug
2007
24 Aug
'07
4:40 a.m.
On Fri, 24 Aug 2007, Arie Groeneveld wrote:
I defined several functions for calculating the number of trailing zero's of n!
tm = sum . takeWhile(>0) . iterate f . f where f = flip div 5
This is very elegant! You could also inline 'f' tm4 = sum . takeWhile(>0) . tail . iterate (flip div 5)