created 11/25/98; revised: 04/21/99, 11/25/99, 01/24/00, 07/20/02, 05/28/03
The last two chapters were about arrays.
The example programs used a
main() method which contained the
arrays and did all the computing.
This is not the way programs are usually written.
arrays (and other forms of data)
by passing them as
to specialized methods.
Each method is like a "tool" that does
something with an array.
For example, there may be a
method or a