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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 did something like this in my solution using
let word_lc = word.to_lowercase();then using word_lc, it worked just fine and avoids potentially having to calculate the lowercase string twiceeg. ①cause A..Z <=> a..z ②So Aba <=> aba <=> AbA => )()
Because the description says so. And it's probably faster.
Good call!