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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.
Minor spelling error in the instructions.
The directions make it seem as though a houses array will be provided in the final test suite. I had to manually override the houses array.
Javascript instructions refer to variable "x", but x does not occur in the problem. The function parameter is "s".