Amazon Software Development Engineer/Test interview questions

20 MCQs in first round. Were algorithmic, aptitude, OS, DBMS related. 2 programs, one based on strings and another was kind of a graph problem (MSP) . First F2F 2 DS related questions. One was to delete elements which had value equal to given value in a doubly linked circular list. The other was to convert a tree into a DLL such in a spiral level order. Second F2F one DS question, for which i took too much time and was rejected. The question was : In a tree node, there is an extra pointer called random. Point random of each node to the next node in that level, NULL if it is the right most node.

I was contracted from College Recruiting team. Asked me few personal details questions. Then after 2-3 days sent me online assessment test link. It consisted of 3 sections first section with technical then reasoning and at last coding round. It was easy round.. Process took about 1.5 hours. After 1 and half week later got another online assessment test link.