Amazon Non Software Development Engineer interview questions

two phone interviews. The first is about my resume, one simple question. -50 ~ 50, when it could be divided by 3, output a, by 7, output b, by both, output ab, by none of them, output the number, then he asked about how to test it. Second is some java basic questions, interface, instance, abstract class, etc. Then he asked my to implement a fibonacci array.