In this chapter I used the following external libraries.
import Base.Iterators.takewhile as takewhile # internal library
import BenchmarkTools as Bt # external libraryThose were used only for the chapter’s extras and are not strictly necessary to solve the task.
Anyway, I recommend you try to solve the task on your own first. Once you finish you may compare your solution with the one in this chapter (with explanations) or with the code snippets (without explanations).
A reminder of how to deal with packages and *.toml files can be found here.