Do not tell me that it has a one line solution 🙉

I ran all tests multiple times, 500 times instead of 50 and haven't found any error. Do you have more specific details on the alleged errors?

@dfhwze I got message that VB was published with broken tests. Can you check it, please, if everything is ok.

Given the pending translations, changing the description in a translation will only lead to merge conflicts.
Also, don't mind the red color, the translation works.

I am not sure that everything all right. Some characters in translation are marked red. And add please examples specific for VB.

approved

Nothing but merge conflicts with such constructs. I hope author manages language specific sections or removes them altogether.

Language-specific example missing.

Like C#: doesn't have a language-specific example.

Why does C# not have a language-specific example?

Now, C# will show the first codeblock, which may or may not look appropriate for it, and may change over time with new translations.

Julia translation

Typescript Translation ready for review.

that is correct

I am aware of that... but why say:"If n itself is a doubleton, return the next bigger than n.".. it is a redundant clause.. you can just say "find the next doubleton number." because in all cases, you are asking for the next.. it does not matter if the argument is a doubleton or not, correct?

Becase it has ONLY two different digits - not more, not less. 111 - not doubleton(has only 1 digit), 123 - not doubleton(has 3 different digits), 112 - doubleton(has 2 different digits - 1 and 2). That's why 10 and 12 are doubletones but 11 is not.