On 11/01/2013 17:33, kwakukwat...@gmail.com wrote:
-----Original Message----- From: K. Elo
Sent: Friday, January 11, 2013 3:56 AM
To: python-list@python.org
Subject: Re: please i need explanation
Hi!
Since there is no stated question, I need to guess:
n -= 1 (instead of "f -= 1")
should work.
Or maybe the question was a totally different one...
-Kimmo
11.01.2013 17:35, kwakukwat...@gmail.com wrote:
def factorial(n):
if n<2:
return 1
f = 1
while n>= 2:
f *= n
f -= 1
return f
please it works.but don’t get why the return 1 and the code below.
factorial or n! = n*(n-1)*(n-2).... for n > 1. For n = 0, 1 the
factorial is 1 the reason for the 'return 1'.
f *= n <=> f = f* n
f -= 1 <=> f = f - 1 but sure this is not correct as Kimmo said n = n -
1 or n -= 1
Regards
Karim
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