Andreas Pauley
I want to see how elegant a solution I can get in a functional language, given that the problem description is not really elegant at all. It has a few annoying exceptions to the normal rules, typical of what one might get in a real specification from some client.
After taking a look at other solutions, I feel like I will have to explain myself, so I’d better do that without prompting :) - nothing was said about meaningful error messages, so I didn’t bother. - I had decided against defining constants like `supplier_markup_percentage_modification` separately; `PremiumSupplierIDs` and markup table are defined locally in the `calc` function, too. The latter two issues are fixed in the next version, as someone may consider them to be against elegance. - surprisingly, all solutions use explicit comparisons to determine the product category. While it is okay for continuous ranges of codes, it doesn’t scale and not really elegant. Fixed as well.