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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.
I have finally got the thing with return statement. But now another problem occured. My output and the needed one are almost the same, but mine has ...[ ], while it should have...[]. (I mean mine has a space between braces though it should not). I don't know how to fix that.
My output looks just like the needed one, but it still says sth is wrong:( I cant't get what