My onsite interview experience :\n\nCoding round 1:\na) Rolling window subarray sum\nb) Valid abbreviation\n-Solved both questions with optimal time and space complexities. needed one hint on the second question for one edge case\n\nCoding round 2:\na) List all nodes distanced by k edges from a target node in binary tree.\nb) basic calculator with + and *\n-Solved both questions with optimal time and space complexities covering all edge cases.\n\nSystem design:\nDesign a simple ticket master for online event.\nSolved a question as in hellointerview but at first I couldn\'t notice that event was online and doesn\'t have row and seatnumber but once interviewer pointed that I fixed my solution. overall recruiter told me that it was ok.\n\nBehavioral round:\nThis round didn\'t went well so recruiter asked to schedule a follow up for this round. in the follow-up round I think it was ok and recruiter passed it to Candidate Review.\n\nToday I got an email from him that after two rounds of directors review they decided not to move forward with my application. Interviewers think that I lack depth of knowledge.\n\nI totally cannot understand what depth of knowledge they were looking for for E4 level.

My onsite interview experience :\n\nCoding round 1:\na) Rolling window subarray sum\nb) Valid abbreviation\n-Solved both questions with optimal time and space c