Compute the expected result by using an arithmetic series instead of looping and adding [moved]

[mikeb01]

This is Issue 7 moved from a Google Code project.
Added by 2011-08-11T22:38:51.000Z by cleh...@gmail.com.
Please review that bug for more context and additional comments, but update this bug.
Closed (Fixed).

Original labels: Priority-Medium, Type-Enhancement

Original description

Not an issue per se. I just noticed it when looking over the tests and it seemed strange.

The expected result for UniCast unit tests is computed by a loop and an accumulator.
An arithmetic series could be used instead. 
Also the code is duplicated. 

Added getArithmeticSeries to Utils and removed duplication.

Perhaps a less general formula like n(n-1)/2 and single parameter method could be used instead for simplicity.