Loading collection data...
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.
Brilliant!
This is how I got acquainted with getOrDefault().
Thanks)
I think two pairs of countries is pretty enough.
There is no need to make students include all those countries to their code just only to pass unit tests.
Just doing stream drills :)
Ooops... It seems I overcoded here
One string with array index is enough here
Shame on me lol
Datz brilliant!
Just wondering why I can't apply solution other than compilator does know.
There are many ways to solve these katas.
I wanna use StringBuilder, ArrayList etc.