Implement array and tree traversal tasks

Company: Amazon

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: hard

Interview Round: Technical Screen

Quick Answer: This question evaluates algorithmic problem-solving and data-structure competency, specifically array-based optimization for single-trade profit and tree traversal techniques for right-side view, along with time/space complexity analysis and system-level considerations; the domain is Coding & Algorithms.