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.
not satisfied with my dull solution...wonder if there is a google smartass way
If the problem is easily attacked with Streams, why not use them? I don't agree that the question calls specifically for solutions that only use arrays. That seems like an artificial limitation. I also don't agree with premature optimization.
IMHO Java8 solutions should not include stream and maps - you are being asked an algorithmic and arrays/based question, answering by creating tons of objects is not appropriate.