whenever you get a regex in a task or in work, try working through it with an app like regex101 (or any other alternative). It neatly shows the result of your regex, ou can input test strings etc. Great stuff for learning regex. Just remember to always select JavaScript (or EcmaScript) interpreter as there are subtle differences

Why is this even?

8 kyu kata represent a beginner level. At this level the kata is only challenging for users new to programming. This includes programming tasks such as:

Defining a simple function (i.e. hello world)
Basic variable assignments
Fixing basic syntax issues
Trivial algorithms such as basic if/else statements

This kata is way too simple, it barely even counts as an 8kyu assignment since you could argue it teaches the most basic syntax

Great and interesting Kata. I suggest taking this one to paper before coding :)

Just for some clarification, I noticed a pattern where you can just return the difference between number of same answers and tom's wrong and correct answers respectively :)

Although the least elegant solution, this one seems like best practice since the array approaches more convoluted

Nice, I went with switch/case but this solution with an array that is dependent on the mod is much more elegant, although quite nuanced :P