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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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Thanks for that explanation :) I didn't think of using split and join in that way.
Not an issue
Yes the split function will change, for example,
"GCAT"into["GCA",""]. The join then adds a"U"between all of the strings in the array so you get"GCA" + "U" + ""->"GCAU".