From: Florian Frank <flori@...>
Date: 2005-12-24T04:56:43+09:00
Subject: Re: Why not Python? (No, no, I am not a spy)

Jeff Wood wrote:

>heh, darn, bug there ...
>
># yes assumptions about positive integer numbers...
># factorial of 0 is undefined ...
>
># complete recursive:
>
>def factorial( x )
>  return 1 if x < 1
>  
>
return 1 if x <= 1

>  x * factorial( x - 1 )
>end
>
># tail-recursive:
>
>def factorial( x, sum = 1 )
>  return 1 if x < 1
>  
>
return sum if x <= 1

>  factorial( ( x - 1 ), ( sum * x ) )
>end
>
># iterative:
>
>def factorial( x )
>  sum = 1
>  for i in (1..x).to_a
>  
>
for i in 1..x

>    sum *= i
>  end
>end
>  
>
And why do you call your products "sum"?

-- 
Florian Frank