The description should specify that the goal is to return the central element, as opposed to the central index. Also, as others have pointed out the problem is extremely simple. Maybe allow empty and/or even-length arrays as inputs and provide instructions for how the function should deal with them.

The name number is in the description, so it would be better to use it for the argument in the initial solution.

Merge conflict. You need to fork the translation and resolve the conflict in the description.

Good point - I've changed it to test the whole range. Thanks!

One random test isn't enough, especially considering the input range. It would be better to test the whole range.