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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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I loved this kata, it was fun
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It only works well on strings where characters are formed by one codepoint. fails for surrogates.
So better use iterators instead access in a binary way
It's good to know my solution is viable for a year long after everyone I know and love is long dead!