February 28, 2014

I was reading Jon Bentley’s book More Programming Pearls the other day; it’s a superb book, and I re-read it every few years. In the first chapter Bentley uses a profiler to improve a small function to identify prime numbers by trial division; in today’s exercise, we will do the same.

Your task is to use a profiler to improve a program you have written; depending on the facilities provided by your language, you may have to write your own profiler. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.


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