[trebbble]

Over 15 years in the industry, shitloads of code shipped in a dozen plus languages, repeatedly taken an idea all the way to being a functioning product, usually get great feedback from peers and managers, often taken point on architectural matters, et c., et c.

Yeah, I'd probably google that in any language I've written, including ones I've worked in in the last couple weeks. Even if I thought I knew what to do, and even if I tried it and it seemed to do the right thing, I'd google it (or use in-IDE docs, or similar) because I wouldn't trust that I was entirely correct.

... however, narrow the question and give me some resources ("the input will be a positive, unsigned 32-bit integer; the string should be ascii and use digits, not words, to represent the number; do insert commas every third digit [and we're working exclusively in English, so commas are all we need and you can ignore system locale preferences—one of many subtle ways one might screw this up]; here's a printout of an ascii table for reference") and I can probably do something like what's requested, without the aid of Google. As long as you don't expect the syntax to be completely perfect.