Factorial of a number in Python – Coderbyte Solution

First Factorial

Factorial of a number in Python

Have the function FirstFactorial(num) take the num parameter being passed and return the factorial of it. For example: if num = 4, then your program should return (4 * 3 * 2 * 1) = 24.

For the test cases, the range will be between 1 and 18 and the input will always be an integer.

Examples

Input: 4
Output: 24

Input: 8
Output: 40320

Code:

Method1:

#Using Recursion
def FirstFactorial(num):

  # code goes here
  if num==1:
    return 1
  else:
    return num * FirstFactorial(num-1)
  
       
# keep this function call here 
print(FirstFactorial(input()))

Method2:

def FirstFactorial(num):

  # code goes here
  f=1
  for i in range(1,num+1):
    f=f*i
  return f

# keep this function call here 
print(FirstFactorial(input()))