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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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My solution passed in 325 ms. I think you concatenate string inefficiently.
Can we please look at reducing the amount of test cases for the final? I can't pass the test because it's taking too long to complete.
I've got over 3000 random strings generated for the final tests. It goes beyond the 12000ms allowed by Kata and it's failing.
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