Factorial Program

EasyPython

Problem

Write a program to calculate the factorial of a number.

Implement def factorial(n):, which accepts a non-negative integer n and returns n!, where n! = n × (n - 1) × ... × 1. By definition, 0! equals 1. Return the result as an integer.

Constraints: 0 <= n <= 20.

Constraints

0 <= n <= 20
n is an integer
The input is non-negative

Function Signature

def factorial(n):

CodePython 3

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