Technical Report CS0867

TR#:CS0867
Class:CS
Title: ALGORITHM SIMPLIFICATION THROUGH OBJECT ORIENTATION.
Authors: Eliezer Kantorowitz
PDFCS0867.pdf
Abstract: During an object oriented (O-O) redesign of a legacy CAD system a surprisingly simple and efficient solution algorithm was discovered for a change propagation problem. The simplification resulted in low program implementation and program extension costs. The implementation complexity was reduced from $o(N^2)$ to $o(N)$, while the extension complexity was reduced from $o(N)$ to $o(1)$. Analysis of the case shows that O-O analysis is effective at detecting such advantageous algorithms. On the other hand, it is difficult to discover such algorithms with traditional top-down analysis. This is an important reason for preferring O-O analysis.
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