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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.
Technically no, the question only defined behaviour for when the string only contained one word. So this could very well be the expected behaviour for cases of more than one word.
with title you make "upper" the first letter of each word. Your answer would give error if we would have more than one word