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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.
I am wondering too
How did you discover this?
This has to be my favourite by far.
My changes make the solution faster because creating strings is expensive.
Really all you need to do is comment out the Select line and your solution is about 40% faster.
The solution doesnt need to create that new word using the where, since the split has already gotten rid of all of the bad characters for you.
// These changes drop the run time from ~220ms to ~130ms.