This is a really basic implmentation of Monte Carlo integration for computing the volume of hyperspheres in low dimensions. The point of it definitely is not the accuracy or speed of the computation, but rather the simplicity of implementation. This could be considered a template for cases where parallelizable processes, such as Monte Carlo processes, having an easily crafted computation kernel, want to be threaded.
You can run the example like:
ruby sphere_cli.rb 2 100000
to perform 100,000 iterations of the Monte Carlo integration for a hypersphere of
dimension two. Or run the tests in the /spec folder. It is possible tests could
fail if the RNG does not produce acceptably distributed output.