Working the problems from the following web site: http://projecteuler.net/index.php?section=problems Note: No solution PDFs are contained within this repo; this repo contains only source code solutions. Obviously the completed solutions will run to produce the correct answer to problems. That isn't the purpose of me sharing this - the purpose is to share possible solutions. Note of efficiency: Some of these programs are quite efficient at solving the problem but most are not -- there are more efficient programs out there if that is what you are seeking. My efforts mainly focus on architecture and maintainability.