Exercise

Everyone wins

After the last exercise, you realize that you have the power not just to improve your own grades but the grades of everyone else. So why not use your skills to help others too?

The array of grades grades_array is available in your environment.

Instructions

100 XP

Create a mutating function named topstudents!(), which accepts an array x, and changes all the elements to "AAAA".
Call the function on the grades_array array.