projecteuler.net is a website that offers several problems related to various fields of mathematics and algorithmics. Some are very simple, and some are much more complex. This repository contains solutions to some of the problems listed on the Project Euler website.

In order to calculate the solution to a specific problem, simply use the run script in the project's root directory, and give it the problem number. For instance, if you want to calculate the answer for problem #42:

./run 42

For some problems, it may take some time before the answer is calculated. For most problems, the answer is given within 5 seconds; but it can take a lot more time, with one problem reaching 90 seconds of calculation.

The data/ directory contains the data files used by a few of the problems, which are used for calculations or parsing.

The problems/ directory contains the solutions for each problem I have solved. Each file corresponds to a problem, and is named after the problem number. The heading of the file contains the date it was solved, the computed answer, and the original problem description from the Project Euler website.

The helpers/ directory contains helper functions and module. Most notably, there are functions for reading files, and handling prime numbers. Since many problems on the Project Euler website use prime numbers, I have developed a library for detecting prime numbers, decomposing a number into its prime factors, iterating over primes, etc.

I have deliberately chosen to duplicate code that would be available in Python's standard library, because that is part of the fun of working on this project. Coding these algorithms myself also gives me a deeper understanding of how they work.