Encountered two highly challenging HackerRank questions, placing a significant emphasis on Tree and Graph algorithms during the Amazon interview process. A strong recommendation for applicants to engage in comprehensive preparation to grasp the technical intricacies of these algorithms.

Interview was conducted well. Questions were fair, just wasn't prepared well enough. Brush up on your data structures and basic algorithms. The programming language used doesn't matter. Prepare past experiences stories beforehand so you are ready when asked about an experience.