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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 agree. it kind of kills the point of this kata
@kjanus-thecreator Description says. "The tests contain some very huge arrays, so think about performance"
I insist this 6 kyu kata's solution should be implemented in imperative style, not two-lines declarative one. Otherwise it must be 7 kyu.
Says who? This is a perfectly functional soulution. No need to impose arbitrary limitations on ourselves
Thx. I believe it could be refactored even more, but have no time for this...
By the way, you may just press the buttons "Best Practices" and "Clever". Usually, comments are used to ask something or add some information.