The description says to return 'null' in C#, 'None' in Rust, etc. It doesn't say anything about return types in R.

I think your point stands for the 'R' version though, because it is disproportionately difficult in R for an 8 Kyu kata - no beginner R programmer is going to think of the difference in return types between 'return(NULL)' and 'return(NA)'.

I agree with you that the R version really needs a hint to use an 'NA' return type.

Look at it as if you are on a transparent roof and you are looking down into a room. A wants to move across the room in a straight line to reach B. The walls are at some distance away from this straight line. The distance is what you get in the input parameter of the kata. For each step A takes towards B, the walls W also move one step closer.

(You don't need to flag these questions as spoiler.)

The 'W' is just a visualisation, it is not part of the kata. You get an array of values like this [2,3], which means the north wall is 2 units away from the center of the room and the south wall 3 units.

the position of the W (w.. .w. ..w) or how many are (w.. ww. www) have any ralation with the kata or is random? sorry my english...

thanks!!

Hi. Suggestions are suggestions of improvements to the kata itself. Not hints to the users intending to solve it (in general it's better to avoid to give them, though your one is very general and not problematic IMO; one can give small indications to answer a question from a user, but it's important not to spoil the kata either, it also needs to be evaluated depending on each kata, its rank, etc.).

The site is a primarily an English website. IMO it's not a problem to translate also into another language, this can help users whose English is not fluent, but as a complement (better write first in English, then in another language). There's not defined rule about that either. The problem is it may be hard to control. Who knows if you don't just give the solution to the kata in a language moderators and helpers don't understand?

i write in english and spanish, do i have to do it just in english? and i don't understand why is not a suggestion. I have a problem with the test because the string...

not a kata suggestion (also write in English plz)

SOLO hay que enfocarse en la descripción y ver que te pide que hagas con la función.-
JUST pay attention to the Kata description.-