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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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can someone explain me this solution?
At least for C.
It should be specified if the string passed is modifiable or not.
Solutions in C that change the original string in place will not work when called with makeUpperCase("HELLO") (as opposed to makeUpperCase(strdup("HELLO")))