live-coding | CLI tool to share content

I'm trying to solve a 2D-Ising model with Monte Carlo approach.

As it is slow I used Cython to accelerate the code execution. I would like to push it even further and parallelize the Cython code. My idea is to split the 2D-lattice in two, so for any point on a lattice has it's nearest neigbours on the other lattice. This way I can randomly choose one lattice and I can flip all the spins and this could be done in parallel since all those spins are independent.

So far this is my code :
_{( inspired from http://jakevdp.github.io/blog/2017/12/11/live-coding-cython-ising-model/ )}

I'm using Chez Scheme and I'd like to introduce some top-level bindings based on the contents of a directory. The usage of this hypothetical macro might look like this:

Quick meta-info:

I was looking for really right place for this question, there is none on stackoverflow. Still answering this question requires programming experience.

I am senior software engineer and lead node.js developer in company with 250 employees, therefore I am doing technical interviews. I am here only for 2 months, so I do not have that much experience with it (previous company was much smaller, so hiring new backend guy was very rare).

The part of interview is live-coding, usually through skype. I think this is quite important, because some people are really not able to do almost anything.

But there is one thing that bugs me - a lot people failing on task "find second biggest number in array" which I think is very easy.

I usually write them this piece of code with only limitation - dont sort an array and dont use any special functions for arrays: