C (Coding): Intermediate Level Algorithms Test

Why this matters?

Linked lists are a fundamental data structure, and understanding them demonstrates a solid grasp of pointers and dynamic memory management in C.

What to listen for?

Look for correct struct definition, proper use of pointers to link nodes, dynamic memory allocation with malloc, and safe insertion logic without memory leaks.

Why this matters?

Sorting algorithms are essential for data manipulation. Understanding bubble sort and its optimization shows awareness of algorithm efficiency.

What to listen for?

Candidate should describe the basic algorithm and propose optimizations like early stopping when no swaps occur in a pass. Watch for clarity on time complexity and practical improvements.

Why this matters?

Memory management is crucial in C, and detecting leaks shows proficiency in writing robust, efficient code.

What to listen for?

Expect discussion of tools like Valgrind, manual tracking of malloc and free, and good coding practices to avoid dangling pointers or leaks.

Why this matters?

Understanding memory regions is vital for managing variable lifetimes and resource allocation in C programs.

What to listen for?

Candidate should differentiate automatic (stack) vs. dynamic (heap) memory, explain when each is used, and demonstrate awareness of scope, lifetime, and potential pitfalls.

Why this matters?

Binary search is a classic algorithm requiring careful index management and understanding of divide-and-conquer.

What to listen for?

Look for a clear explanation of the search logic, correct handling of midpoints and boundaries, iterative or recursive implementation, and handling edge cases (e.g., empty arrays).