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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 khow it, but I have some solution, that main
That feels kinda, cheaty; don't you think?
yeah, clean and understandable, but it has complexity O(n^2) instead of possible O(n)
this works because it is node.js and it changes the code as necessary rules