I just don't think quicksort is a good fit for visual programming, (not that I've ever actually implemented quicksort....).
Visual is excellent for things like "At 7PM if the enable switch is on, turn on the sprinkler".
Stuff that's very simple, but you want no chance of it going wrong, and you might want to edit it from a phone.
When you want the least powerful programming model possible, that isn't even turing complete, that's arguably not even programming and just configuration, it's great.
It really depends on your visual rep. For me, I took symbols related to CFG and RegEx representations, and then focused on direct manipulation of those representations. You can find a YouTube video of it probably, and I know I have a paper somewhere, but it’s been so long.
A conversational interface is already going to work well for simple things, but that isn’t very visual. Without abstraction, encapsulation, and generalization, are you even programming?
Visual is excellent for things like "At 7PM if the enable switch is on, turn on the sprinkler".
Stuff that's very simple, but you want no chance of it going wrong, and you might want to edit it from a phone.
When you want the least powerful programming model possible, that isn't even turing complete, that's arguably not even programming and just configuration, it's great.