I applied online. The process took 2 weeks. I interviewed at Amazon in Nov 2021
Interview
I managed to get to the OA step of the interview.
At the moment I did not know how to solve the problems because I hadn't researched anything on DS& Algos, just applied passively.
So I got a week between being told that I had an OA interview and 5 days to finish the OA. The OA is typically 70 minutes.
Interview questions [1]
Question 1
I got two questions. String manipulation (longest common prefix) and an array problem(I can't remember exactly which one). But I'd say the first one was medium and the second one was easy.
I applied online. I interviewed at Amazon in Sep 2021
Interview
The interview consisted of 3 Rounds
♦Round 1 - Online assessment
*Coding + Debugging + Aptitude: (2 hours)
There were four sections
A. 7 questions for debugging (C / java) (25-30 minutes)
B. 2 Coding Questions (DSA based) (1 hour)
C. Work Style Assessment (To know how you work) (20 minutes)
D. 24 Question Aptitude (Reasoning) (25 minutes)
♦ Round 2 - Technical Interview 1
Purely DSA based interview (1 - 1.15 hours)
Asked 2 DSA questions with code and complete a dry run over their test cases.
♦Round 3 - Technical Interview 2
DSA + CS fundamentals + Project discussion (1 -1.15 hours)
Purely DSA based + some CS fundamentals were asked.
Asked 2 DSA question
Interview questions [1]
Question 1
Question 1 - Removing Duplicate elements from the linked list with the minimum number of connection removal.
Question 2 - Width of a binary tree.
Question 3- Printing of Longest Increasing Subsequence (LIS) in O (N log N) complexity
Question 4- Spiral Order Traversal of a Binary Tree
Timed exam first round followed by thirty minute video interview with a team member. Video interview consisted of a coding problem, a conceptual systems design problem, and general behavioral questions.