Not a big fan of this kata. It seems to test more math than programming skills.

And it should not, according to the condition of the task

At first I didn't understand either. You need to sum all the arguments (they are in decimal) and convert the result to a binary as an array.

This is infamous type conversions 🤭

Oh, so there is a hack 😆

Well, this is definitely bad practice 😆. One-liners like this might impress beginners, but they are unreadable, therefore it's just bad code.

You can also write .filter(Boolean).

The formula is displayed incorrectly during training. Do you think it is OK? For example, I did not even look in the "Details" before.

The formula should be c = ( r * P0 ) / ( 1 - (1 + r) - N ). The current formula is, even mathematically, incorrect.

I did not undestand the given formula for JavaScript c = r * P0/1 - (1 + r)-N, found another one:

p0 * r * (1 + r)^N
_____________________
  (1 + r)^N - 1

Regarding the kata, I did not like it. It is not about programming, just about math and putting correct numbers in correct spots.

Old school React class components! Well, that was fun... in a way. Firstly I rewrited everything to functions and hooks, but it turned out the test env does not know what React.useState is. Rewrited everything back again. But enjoyed it nevertheless.

There is no fixed test for two identical smallest numbers in JavaScript.

In JavaScript you can get the string using this.

Maybe one day it was a 6 kuy, but the modern JS makes it super easy, 7 kuy, no more.

Wow, okay.

I disagree that this is a duplicate, but whatever.

Do not need such training. I am never going to create a kata again. This one was enough.
A very unpleasant experience. So much toxicity from the community, it's like I'm taking money from you for it.