Groupon Programmer interview questions

It took less than a week after I've submitted my application to receive an email from Groupon Malaysia, inviting me for an interview. The interviewer was nice and was more than happy to answer every question I had. There were two stages: group interview and individual interview. For the group interview, the interviewee would ask some questions, and me and another interviewee would take turns to answer. After that, the interviewer would have a one-on-one interview with each of us. Overall, my interview with Groupon was a pleasant experience, and it was quite a straightforward and fun one.