I applied online. The process took 2 weeks. I interviewed at Groupon in Jun 2013
Interview
The first round phone interview, very basic algorithm questions about finding min value in an array(min value, min value index, min value indexes, k min values).
Interview questions [1]
Question 1
I never expect a question like linear search to find a min value in an arrary, but it is very good for interviewee to relax