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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.
(RUST) There are issues with Rust tests, or description of this kata:
key string consists of unique letters and digits
. That's not the case for Rust solution - random tests have plenty of duplicate letters in keys.The message is never shorter than the key.
. Again, plenty of random tests that have messages shorter than the key.