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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.
Insufficient info, closing
What language are you using? What bug have you experienced?
There's an bug in the initial solution.
I also was stumped by this, but understand now. Range returns a sequence between two numbers, so if there is no step/sequence between the two numbers, then there is subsequent number to return. Therefore, only one value is returned.
Nice