Amazon Software Developer - Internship interview questions

A few years ago, went through some online OAs include a test on Java, and then a 30 minute coding technical round, which I've heard depends on your interview but I got a relatively difficult question and an unhelpful interviewer.

I applied for the Software Engineer Internship at Amazon. After submitting my application, I received a Hackerrank assessment. The test had three coding questions. I did my best to solve them, but unfortunately, I was rejected after just one round. The questions were challenging and tested my problem-solving skills. I did not get any feedback or further interview rounds.