It started as usual with about five minutes of self-introduction and small talk. Then there were around 27 minutes of behavioral questions, including:

Why Amazon? Why this internship program?

Describe a situation where you had to make a quick decision.

One question related to a deadline (DDL).

Overall, there was a fairly high proportion of behavioral questions. The depth of answers and follow-up questions varied randomly depending on the interviewer.

Then there were about 25 minutes of coding: given two sorted arrays arr1 and arr2, merge arr2 into arr1 without using an extra array, keeping arr1 in ascending order. This was straightforward with a two-pointer approach. The follow-up asked how to merge them if the arrays were in descending order, and how to handle it if the arrays were unsorted.

Finally, there was a chance to ask one question, which was mostly just a formality.