So many garbage kata lately, what is going on?

What's with all these kata lately requiring complex mathematical theory and not including the calculation? bro, I just want to code

solving systems of linear equations :D
but i preffer to leave this behind my back at university also xD

um, what? I do not understand what you are asking of me

what is this?

I do not understand what the goal of this kata is to even start

This program is stupid.

It's an opinion, not an issue.

Ok, Karen.

A number m of the form 10x + y is divisible by 7 if and only if x − 2y is divisible by 7.

m = 1603 -> 160 - (2 x 3) -> 154             //first time
154 -> 15 - 8 = 7 and 7 is divisible by 7    //second time

Read the description again, please.

This program is stupid. It forces the computer to think in the way humans think, which is essentially inefficient for a machine to do.

NOT TO MENTION it is a redundant program. You're writing a program to figure out whether a goddamn number is dividible by 7 (%7 == 0), and you went through a bunch of unnecessary operations to eventually use the condition %7 == 0 ? again. How dumb is that?

I didnt even check if 1603 was divisible, but why does it need to be done 2 times?

m = 1603 -> 160 - (2 x 3) -> 154 -> 15 - 8 = 7 and 7 is divisible by 7. it's in the description. 1603 is divisible be 7 too, but you need to apply the method 2 times, and that's what you should return.

I dont get it. Does this work differently than how XOR is supposed to work? Is it not EXACTLY one True value in the array? Or am I just not understanding something?