python factorial recursion code example
Example 1: factorial of a number using recursion in python
def recur_factorial(n):
if n == 1:
return n
else:
return n*recur_factorial(n-1)
num = 7
if num < 0:
print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
print("The factorial of 0 is 1")
else:
print("The factorial of", num, "is", recur_factorial(num))
Example 2: factorial in python
def fact(n):
if n==0 or n==1:
return 1
else:
return n*fact(n-1)
print(fact(4))
import math
print(math.factorial(4))