Spiral Matrix

A spiral matrix is a 2D grid (typically m × n) that is either filled with values or traversed in a clockwise (or counter-clockwise) spiral order, beginning at the top-left corner and proceeding layer by layer toward the center. The traversal follows the sequence: left → right, then top → bottom, right → left, and bottom → top, tightening the boundary after each side. Common variations include generating a matrix with numbers 1 to m×n in spiral order, or extracting elements from an existing matrix spirally (e.g., LeetCode #54). The algorithm typically uses four boundary pointers—top, bottom, left, right—and terminates when they cross. Time complexity is O(mn); space complexity is O(1) (excluding output). Spiral matrices are used in image processing, memory layout optimization, mathematical visualization, and coding interviews.

Recent changes:
What's New:
Dark Mode Support: By popular demand, the app now fully supports dark mode! Enjoy a more comfortable viewing experience in low-light conditions.
Performance Enhancements: We've optimized the core algorithms, resulting in up to a 30% speed increase for generating larger matrices.
Interactive Matrix Visualization:
Step-by-Step Generation: Watch the spiral matrix being drawn in real-time, step by step, allowing you to understand the generation process.