9: Recursion in python

                                9: Recursion in python

Recursive Method for Calculating Factorial

Task
Write a factorial function that takes a positive integer,  as a parameter and prints the result of  ( factorial).

Note: If you fail to use recursion or fail to name your recursive function factorial or Factorial, you will get a score of .

Input Format

A single integer,  (the argument to pass to factorial).

Constraints

• Your submission must contain a recursive function named factorial.

Output Format

Print a single integer denoting .

Solution:

#!/bin/python3

import math

import os

import random

import re

import sys

def factorial(n):

    if n == 0:

        return 1

    else:

        return n * factorial(n - 1)

n = int(input())

print(factorial(n))