Amazon SDE-intern interview questions

There were one online coding rounds consists of two coding questions . I'd solved both the questions. After 2 weeks , I got mail for interview at their office . There were 2 rounds of interview . Each round consists of 2 to 4 problems , you need to write the optimized code on the paper .

after 2 months internship 2 interviews were held to select about the conversion. 1st one was taken by SDE2 and second one by senior manager/SDE3. Both interviews were of 1 hour each. They were technical interviews and difficulty was Average.