It was an on-campus drive in my college with around 500 candidates. I was in my 3rd year, and Amazon came for a 2-month summer intern role with a stipend of ₹80,000/month.

There were just three steps:

• Coding test
• Leadership Principles test
• Interview

In the coding test, there were two problems to be solved in a span of 70 minutes. It depends on luck whether you get hard or easy problems, but the majority of candidates were getting two medium questions. I completed my test in around 10 minutes and was selected for the interview.

At first, there was a basic introduction, and then they straight away went to the coding questions.

Q1. You are given a binary tree with height h and nodes n. Find the zig-zag traversal of the binary tree and then find the maximum sun subarray from that.

Q2. You are given a 2D array of size n x n on which you can perform two kinds of operations:

1. Change two rows with input format "1 i j".
2. Change two diagonals with input format "2". You are given q queries, and you need to perform all these operations and print the final array.

We had 1 hour to complete the interview. The interviewer was very frank and comfortable to work with.