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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.
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For these that can not pass the test, the function is call "greet" with two e not "great".
g means global, so instead of matching the first x or first o, it match all the x and o in the string. i meaning case insensitive, it will match both upper case X/O and lower case x/o.