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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.
Besides, '.0.9.9.9' is invalid, and we don't need to handle invalid inputs :P
A bad example of using key word -- this.
Yes, you are right, but it is enough pass all testcases,
I think that We don't need to waste brain outside the testcases, so...
thanks for your feedback.
If a sting end up like '.0.9.9.9', function seems return an incorrect version number.