But it was a good idea! The interviewer just didn't expect a rock solid idea on the OP's part. It seems the interviewer was more interested in creating a hard i

But it was a good idea! The interviewer just didn't expect a rock solid idea on the OP's part. It seems the interviewer was more interested in creating a hard interview rather than finding a good engineer. And while we're on that, I firmly believe that giving a business-agnostic pull request "spiked" with errors, brad practices and tricky to find bugs and asking the interviewing party to review it is going to tell you much more about them than leetcode-interviewing them.