Loading collection data...
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.
It means reverse action
Hi brother could you please explain me what ! does in !vowels???
this one is definitely wrong
Please can anyone explain me the logic here?
Please explain this logic
like @SimonR mentioned, the second test case is confusing and failing in Objective C