These are solutions to SoloLearn's Code Coach challenges written in Ruby. The test cases are those shown as example and those openly used by SoloLearn.
All examples are put into public domain, see LICENSE.
If you have ever wondered how to test a ruby script which gets input from a user with rspec, then checkout the spec directory.
I use scrcpy and connect my phone to the PC. I can even run the programs locally and copy it to the phone later.