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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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Yeah, I have encountered the same problem using Python, as it seems 'CFHMVZNGH' and 'BQJUECZ' have the same score,and index 2 is before index 5.
Instructions state that "Words smaller than 3 letters should not change", but it should read smaller than 4, since three letters word are not going to change since the first and last letter cannot be changed.
I can't vote both Clever and Best practices at the same time.
My Python attempt fails with all decimal negative numbers, when I print the number parameter is 247 whereas it should be -247, it looks like parameter is converted to positive.