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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 think the kata description was updated. That should explain all the solutions that check for space instead of non-alphabetical characters.
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Node v18 should be enabled for this kata
It betrays the principle of pure functions and could cause side effects.
Reading the discourse was what helped me solve this kata. This is a math problem