How to highlight a novel dataset creation in a research paper?
Make your paper a data paper, and add in the bit about the simple algorithm into the introduction. That way, you put your data front and centre.

And then see the answers to Data publication basics - where, why, how, and when should I publish my unpublished data? for how to release the data for the whole community to access: doing this is almost always a requirement for getting a data-paper published.