Write a program that calculates the factorial of a number. This program should take as input a non-negative integer and output the factorial of that number.
Example:
Input: 5 Output: 120
Input: 0 Output: 1
The factorial of a non-negative integer n is the product of all positive integers less than or equal to n. It is denoted by n!. For example, 5! is 5*4*3*2*1 = 120. The factorial function can be defined by the product n! = n*(n-1)…321.
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
print(factorial(5)) # Outputs: 120
print(factorial(0)) # Outputs: 1
Unlock AI & Data Science treasures. Log in!