Text Diamond Kata

Here's a sample solution for the Text Diamond Kata that I'm using with cyber-dojo:

Given a letter print a diamond starting with 'A' with the supplied letter at the widest point. For example: print-diamond 'E' prints

A B B C C D D E E D D C C B B A

This sample deliberately doesn't used recursion (the group is learning basic algorithm handling), and is written in C# using MsTest as the test framework.

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