Amazon Software Development Engineer Intern interview questions

I began my online application on February, 2012. After submitting my resume online, I also sent an email to the HR saying my interest of this position. About one week later, I got the email for the appointment of an phone interview. But I made ahead of the time since midterm during that period. There are two parts of the phone interview, each of which consists 45 minutes, including introduction, interest, algorithm design, coding and additional information.

I got the interview call and interview was scheduled on campus. Interview starte directly with coding questions. Given a thousand lists, find the longest common sub-list.