Amazon Developer interview questions

Applied on the site directly. Started off by asking simple questions relating to polymorphism, inheritance, protected&private access specifiers. Next, discussed about various data structures - array, linked list, hash tables - their complexity , space requirements etc. 1 question in coding - check if all elements in one strings exist in 2nd string. Design question - design a deck of cards. I don't know why I dint get through

The interviewer was very professional, My first phone interview went well. The interview was quite patient and encouraged my thought process and I could answer the questions. I was asked questions based on data structures. Second interview was similar, the interviewer asked me many non-technical questions like why Amazon, projects I have done and technical stuff like OOP concepts, two design problems. Interviewers are very helpful, they want to know more about how you try to tackle the problem, and do you catch the hints they give you.