project_euler.problem_017.sol1
==============================

.. py:module:: project_euler.problem_017.sol1

.. autoapi-nested-parse::

   Number letter counts
   Problem 17: https://projecteuler.net/problem=17

   If the numbers 1 to 5 are written out in words: one, two, three, four, five,
   then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.

   If all the numbers from 1 to 1000 (one thousand) inclusive were written out in
   words, how many letters would be used?


   NOTE: Do not count spaces or hyphens. For example, 342 (three hundred and
   forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20
   letters. The use of "and" when writing out numbers is in compliance withBritish
   usage.



Functions
---------

.. autoapisummary::

   project_euler.problem_017.sol1.solution


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

.. py:function:: solution(n: int = 1000) -> int

   Returns the number of letters used to write all numbers from 1 to n.
   where n is lower or equals to 1000.
   >>> solution(1000)
   21124
   >>> solution(5)
   19