Amazon Software Development Engineer interview questions

Long, disorganized and never even spoke to the recruiter until the day of the onsite interview. They had no idea what I was looking for or anything about me. No one even really told me what the job details were until the onsite interview. very disorganized and too long. 7 hours of individual interviews and I had to ask for water and a bathroom

I got 1 round phone interview, and 3 algo questions in it. Then I was brought to do onsite. I met 5 people from 9:00am to 1:00pm. Everyone came to ask me algo questions and Object oriented Design questions.