Matrix Algorithms

Find a target in a matrix by checking each cell.

Visit elements in a matrix column by column.

Rotate a square matrix using transpose and row reversal.

Search a sorted matrix from a corner using row and column ordering.

Visit elements in a matrix row by row.

Walk the matrix boundaries inward in spiral order.

Flip rows and columns across the main diagonal (in-place O(1) for square matrices).

Add two matrices of the same dimensions element by element.

Multiply compatible matrices using row-by-column dot products.

Subtract one matrix from another element by element.