WTF is going on here haha?

This is the first 7kyu Kata after like 50 I could not solve, I did not even start, bacause the goal of this Kata is to hard to understand, especially for a not native English speaker. Also those only math problems are lame.

Thanks, I noticed, that it not update i. But I don't understand why. Is it just the Syntax of for loops? Because when I put in e.g. i++ it does update

Oh interesting thanks. There are so many little tricks

If the very next line is the only one that needs to be (in a loop / after an if), then the { } are not needed.

Why arent there any {} brackets after the for()? I am little confused

I feel like it's very close to being a "realistic" code someone might actually write in their everyday work

OP solved it, closing

I think, it is to easy for 6kyu.
Other then that, it was the most funest Kata so far, becuase the facebook example was so practical.

Is it normal at 6kyu to have performance issues?

I am a beginner and was really happy, that I managed a 6kyu for the first time, but there was one test not passing because of performance issues.
I only could finish with the help of GPT.

Thanks for the reply. Got it now :)