Amazon Software Development Engineer I Intern interview questions

I applied on Amazon's career website, then they got in contact with me a while afterwards. I had two back-to-back phone interviews, each of which was 45 minutes long, with mainly technical questions. I did some online coding with a collaborative tool. I didn't think either interview went that well, but I heard back a few weeks later that I got an offer.

I applied online for the London Development Centre. They sent me an e-mail some months after that with a link to a Codility test. After the test I got another e-mail saying the result was successful and we scheduled a phone call for the following week. The phone call was to set up a face to face interview and talk about the company and position I was applying for. Some details about the time I would be working were settled, as well. The interview was the next week in the Development Centre with a very friendly software engineer. He dedicated about 45 minutes to ask me questions about my resume, past experience and relevant challenges during my experience and the last 30-45 minutes were a technical interview where I was asked to solve a problem using any language I was comfortable with. It was an enjoyable experience, everyone was very friendly even if I failed the technical interview. It ended with a brief tour of the building. They called about a week later saying they couldn't make an offer, but specified that I had done well with the "non-coachable" skills and encouraged me to re-apply as soon as possible with my recruiter.