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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.
Yeah absolutely sexy, this also prevents nasty user input because it enforces the use of a certain datatype. Thanks for the upload!
"Take 2 strings s1 and s2 including only letters from a to z." It's defined in the instructions, so the tests are complete.
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