Solutions for Euler Project.
All solutions are implemented in Ruby.
Files with the problem number (e.g. p001.rb) are the standard solutions (using Ruby standard libraries with a trivial programic way). The files use the simplest and minimum code to solve the problem. Files with '-a' (e.g. p001-a.rb) are alternative ways to solve the solution. Some use self defined Ruby methods to solve the problem. Some solve the problem in a non-trivial way.