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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.
it iterates 26 times on the s, and maps s to lowercase 26 times as well
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It is indeed a good solution, but it's important to note that it overflows faster, causing us to lose almost 1/3 of the possible values
yes indeed. lets iterate 4 times on array to make the code shorter
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