Showing posts with label Factorial. Show all posts
Showing posts with label Factorial. Show all posts

Factorial using while loop

f=i=1
n=int(raw_input('Enter the number: '))
while i<=n:
      f=f*i
      i=i+1
print f

Factorial using Recursion



def recur_factorial(n):
   if n == 1:
       return n
   else:
       return n*recur_factorial(n-1)


num = int(input("Enter a number: "))

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))

Factorial of a Number

# Python program to find the factorial of a number provided by the user.


num = int(input("Enter a number: "))

factorial = 1

# check if the number is negative, positive or zero
if num < 0:
   print("Sorry, factorial does not exist for negative numbers")
elif num == 0:
   print("The factorial of 0 is 1")
else:
   for i in range(1,num + 1):
       factorial = factorial*i
   print("The factorial of",num,"is",factorial)