In an interview I'd be happy just seeing some reasoning. IRL I'd be happy with someone at least searching for a definition and trying to learn from it. I've a

In an interview I'd be happy just seeing some reasoning. IRL I'd be happy with someone at least searching for a definition and trying to learn from it. I've asked this question multiple times as implementing array flatten used to be our go to ice breaker question, and many devs had no issues reasoning and finding an okay type definition.