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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
I would prefer to see the method return true or false versus Possible or Impossible as it seems more practical for a larger scale application. I would also drop "stations" from the required argument list.
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
I would swap lines 2 and 3 as there's no reason to convert to a string if you already know what you need to return; just edit your return to pass back the string.
It may just be this example, or it may be codewars, but my code didn't pass the test validation (yet it passes on irb no problem). Seems that something is up with the compiler.