I'll tell you why anyone would hire me if you can answer my simple question about the relative efficiencies of the top-down versus recursive solutions. You've a

I'll tell you why anyone would hire me if you can answer my simple question about the relative efficiencies of the top-down versus recursive solutions. You've already had an hour and claim to be familiar with the problem space, so I think it's a fair measure of your suitability in this space. I'm going to go for coffee, but there's a whiteboard right there. Shouldn't take more than a minute or two.