Yeah, that's exactly what I look for in problems like that. How does this person approach the problem? How do they decompose the problem? For that specific pro

Yeah, that's exactly what I look for in problems like that. How does this person approach the problem? How do they decompose the problem? For that specific problem, I'd probably be satisfied if they wrote a function that took a number like 341 and returned [3, 4, 1], and then mumbled something about a set or a hash (or a list even) for storing the already seen numbers.