Also, what does the ".ToString()" get us in the "Console.WriteLine(numbers[i].ToString());" line do? I did it with just "Console.WriteLine(numbers[i]);" and it worked.
I got a bit lost on a bit of this. I did some fiddling and started understanding more. I tried applying the Array.Reverse to the int array and that gave me a bit of a better understanding of how that line of code works. It's use then with the char array made more sense.