Really hard to say. Could be a number of things from the engineer reviewing the code being swamped to the coding sample not being strong enough to needing more time. If it's been a few days, it's ok to send in a nice email to the recruiter, even something simple like
"Hi! Just wanted to check if you received my coding sample and if there's any feedback. Thanks so much!"
Understood. I'm an engineer at the company, not a recruiter, but I'll pass the word along. Either way, thanks for the feedback and sorry for the inconvenience. A "no" response is better than no response.
Just saw this -
Thanks! For what it's worth, I think the team there does some really neat things with the doves. Not sure HN'll allow you to amend the post to include an INTERN keyword, but you should add it in subsequent whoishiring's. :)
"Hi! Just wanted to check if you received my coding sample and if there's any feedback. Thanks so much!"