Python Day 9: Recursion 3
Write a factorial function that takes a positive integer, N as a parameter and prints the result of N! (N factorial).
Note: If you fail to use recursion or fail to name your recursive function factorial or Factorial, you will get a score of 0.
- #!/bin/python3
-
- import math
- import os
- import random
- import re
- import sys
-
- # Complete the factorial function below.
- def factorial(n):
-
- for i in range (1, n):
- n= n*i
- return n
-
- if __name__ == '__main__':
- fptr = open(os.environ['OUTPUT_PATH'], 'w')
-
- n = int(input())
-
- result = factorial(n)
-
- fptr.write(str(result) + '\n')
-
- fptr.close()
