Data Structures & Algorithms: Given an array of integers, write a function to move all zeros to the end of it while maintaining the relative order of the non-zero elements. CS Fundamentals (OOP): Can you explain the four main principles of Object-Oriented Programming (OOP)? Provide a real-world analogy for polymorphism or inheritance. Project Deep Dive: Looking at your resume, can you walk me through the architecture of your [Password Strength Checker] project? What was the most challenging part, and what would you do differently now? Behavioral (Problem-Solving): Tell me about a time you were stuck on a complex technical problem for a long time. What was your process for getting unstuck? System Design: How would you design a simple URL shortening service like TinyURL? What APIs would you need, and what would the database schema look like? CS Fundamentals (OS): What is the difference between a process and a thread? When would it be better to use multi-threading over multiple processes? Data Structures & Algorithms: How would you determine if a binary tree is a valid Binary Search Tree (BST)? Databases: What is the difference between a SQL and a NoSQL database? Why might you choose one over the other for a new application? Language Specific (Python/Java): What are some key features of the language you're most comfortable with? For example, what are decorators in Python, or what is the difference between final, finally, and finalize in Java? Behavioral (Teamwork): Describe a situation where you had a technical disagreement with a colleague or team member. How did you handle the situation and what was the outcome?