What do you think, if you were doing Rot13, would you do something like this:

Code:
  string abFrom = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
            string abTo = "NOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLM";
Or would you generate the respective strings as shown, for example, on this page? http://www.osix.net/modules/article/?id=70

The merits and demerits of Rot13 are not being discussed here, it's just a matter of... if it's an encoding-decoding mechanism as simple as Rot13, would you simply hardcode it or generate it?