What sort of code is this?
This is still a form of pseudocode, obviously just not of the form you might have seen thus far. It is worth noting that there is not strict standard or rules for writing pseudocode, as long as it describes the solution to a problem in such a way that someone could then implement it in a language of their choice.

The term pseudocode simply refers to some notation resembling a programming language, aimed more towards human readability and understanding rather than some language-specific syntax.