Amazon Software Engineer(Internship) interview questions

Applied Online and received an interview request in a week, scheduled a phone interview the next week. Consisted of two 45 minutes phone interviews, the first one was purely technical with questions related to Data Structures, Algorithms, Coding- there were 3 coding questions where we are supposed to write code on paper and read it aloud, the second was mostly HR type questions about projects and experiences and 1 coding question. Interviewers are mostly looking for your though process, give the first answer u can come up with and then start building on it ( on the basis of time complexities, memory etc )