Loading collection data...
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.
thats why you should use tail recurrsion, carrying the accumulator, then any number the function will hold
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Right. My bad!
From the description: "[...] return a string representation [...]"
I understand why you'd rather have a different return type (me too), but these are the requirements.
(coffeescript): The test cases should be actually undefined and 0, not "undefined" and "0" as strings.
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There seems to be something wrong with the odd test data, it's expecting "���" which obviously does not match the two characters that it should be getting (sorry, I don't know why my browser is not displaying the characters correctly):
Uhh. Please ignore this.