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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.
Tests consist of strings of length < 30, so if you're getting timeouts, you're probably running into infinite loops or something similar.
I looked at your current code, and the whole thing looks like some slop generated by chatGPT. Don't use AI, use your brain.