There are seven debug questions and thirty logic questions. The debugging questions are fairly easy and shouldn't take that long. The logic questions start off fairly easy and simple but become more detailed and thus take up more time. You have a little over a minute for each logic question.
I applied through an employee referral. The process took 3 weeks. I interviewed at Amazon
Interview
Started with an online debugging quiz in choice of Java or C++. 5 questions in ~20 minutes. I got through this round having scored 4/5 because I let the time pressure get to me.
A couple of days later I got contacted to organise a phone interview. The interview lasted just under an hour with two software engineers on the other end of the line. I was given two problems and found optimal solutions to both. The first one took a while to get through and I felt a bit shaky but blazed through the second one leaving me feeling overall relatively happy.
I received my offer the next week.
I applied online. The process took 2 months. I interviewed at Amazon in Apr 2018
Interview
Two months after submitting my application, I received an email to take an online test. It tested basic debugging and logic questions. About a day after that, I took another online programming test. About three days after that, I had a technical interview with an Amazon engineer. A few days after, I got an offer to be a Software Development Engineer intern.
Interview questions [1]
Question 1
Nothing too difficult. If you know you data structures you'll be just fine.