Rotate the square matrix in a clockwise direction, ensuring not to create an additional matrix.

Hard Difficulty

Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.

iOS System Design question

iOS System Design questions evaluate your ability to architect mobile applications. Showcase your knowledge of iOS frameworks, design patterns, performance considerations, and how you create robust, scalable app architectures.

Here's a Hint

Consider working with concentric layers of the matrix, starting from the outermost layer and moving inward, using temporary variables to avoid additional space usage.