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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.
Ah, you are right, but I expect this to crash if z appears. Next time I'll use just [26] :). TY for let me know
There are strings with uppercase letters in random generated tests in C language.