project_euler.problem_020.sol1
==============================

.. py:module:: project_euler.problem_020.sol1

.. autoapi-nested-parse::

   Problem 20: https://projecteuler.net/problem=20

   n! means n x (n - 1) x ... x 3 x 2 x 1

   For example, 10! = 10 x 9 x ... x 3 x 2 x 1 = 3628800,
   and the sum of the digits in the number 10! is 3 + 6 + 2 + 8 + 8 + 0 + 0 = 27.

   Find the sum of the digits in the number 100!



Functions
---------

.. autoapisummary::

   project_euler.problem_020.sol1.factorial
   project_euler.problem_020.sol1.solution
   project_euler.problem_020.sol1.split_and_add


Module Contents
---------------

.. py:function:: factorial(num: int) -> int

   Find the factorial of a given number n


.. py:function:: solution(num: int = 100) -> int

   Returns the sum of the digits in the factorial of num
   >>> solution(100)
   648
   >>> solution(50)
   216
   >>> solution(10)
   27
   >>> solution(5)
   3
   >>> solution(3)
   6
   >>> solution(2)
   2
   >>> solution(1)
   1


.. py:function:: split_and_add(number: int) -> int

   Split number digits and add them.