Amazon Software Development Engineer SDE interview questions

OA: two leetcode style questions with hidden test cases Final round: consisted of 3 interviews. first was a technical round testing merge sort and a graph question. next was a system design interview. final was behavioral

1st round 5 programing questions I wa not able to crck the exam because I didnt prepare well . Its better to prepare for at least to 6 months to crack this interview it is not possible to directly go on crack the interview so please try your level best to prepare before appearing