People, I'm new in the programming area, and doing exercises I came across the following question:
Make a program that calculates the factorial of a user-supplied integer. Ex.: 5!=5.4.3.2.1=120
How do I use pycharm to solve this?
For the factorial problem it is quite simple to solve using a recursive function:
def fatorial(n):
if n<=1:
return 1
else:
return n*fatorial(n-1)
Well, there are several ways to solve your problem. Two very simple ways are using recursion and a simple loop:
def fat1(n):
if n <= 1:
return 1
return n*fat1(n-1)
def fat2(n):
resultado = 1
for i in range(1, n+1):
resultado *= i
return resultado
Another option in a more functional style:
from functools import reduce
from operator import mul
def fat3(n):
return reduce(mul, range(1, n+1), 1)