Interview QuestionBank

Could you demonstrate how to build undefinedToNull(), converting undefined elements in an object to null?

Describe the structure of a class that implements a matrix rotation function, including its inputs and return specifications.

How do you plan to implement custom versions of Array.prototype methods like flat, map, reduce, and concat in JavaScript?

Can you demonstrate how to write functions for creating and managing a file tree, including adding directories, inserting files, navigating the structure, and deleting elements?