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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.
It is not explicitly stated what order key-values have to be returned, although in example it is sorted alphabetically. I don't know many programming languages, but in Python dictionary kept order from 3.6, in C# it is not kept. So maybe some clarification is needed.
It would fail. In my case (and I suppose not only mine) there was an array with 5 different numbers and only one of them was unique.
nice job dude
What Da !!