How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

What difficulty level is this interview question?

This is a Medium difficulty Coding & Algorithms question, commonly asked during Technical Screen rounds at xAI.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at xAI during technical interviews.

Define and compare smart pointers | xAI Interview Question

Q: Define and compare smart pointers

This question evaluates understanding of memory management and ownership semantics, covering competencies such as RAII, reference counting, lifetime management, custom deleters, and the roles of unique, shared, and weak smart pointer types.

What is a smart pointer? How do smart pointers manage ownership and lifetimes compared with raw pointers? Describe common types (unique, shared, weak), mechanisms (RAII, reference counting, custom deleters), typical overheads, and pitfalls like reference cycles; include examples from C++ or Rust.

Define and compare smart pointers

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