@hobovsky it seems you had a typo on your post up there:

It means that for n=414, the expected answer is 114, and your solution returned 441. Or following one:

It should be 144, not 114.

Your observation is most probably incorrect.

In the example it says that for input 531, the expected answer is 513.
Your error message says that your solution returned 531, but it should return -1, but you did not say what was the input number.

instresting observation

from the description
next_smaller(531) == 513

from the test
531 should equal -1

why the contradiction?

• No sample tests in C#.
• Logs to Console in C#.

lgtm

Done. Lmk if I missed any.

Scala translation

Replace those gross math.random calls with lodash and i'll approve

Kata is already tagged performance.

I am unconvinced that providing the test parameters and expected time complexity in the description would help in this instance. If someone doesn't arrive at a working approach on their own they won't know what to do with that information in the first place.

Other one should be remade and reranked at 7kyu, right now the requirements aren't even consistent across languages for it.

To think my thought process of finding the first character was the same, but couldn't figure out how to continue for the next characters.
And then to see this 'simple' solution to the problem...
Hats of to you

Java Translation

Confirmed. Thanks. Was C# 12 added to Codwars last month (Nov '24)?

https://www.codewars.com/post/whats-new-on-codewars-november-2024

The OP wrote this question 5 months ago. I wanted to share the idea of identity-functions as an FP practice to anyone interested.

Order should be already available on CW for kata which have been migrated to C# 12.