Given a 2-D matrix, write a function to perform a spiral traversal of the matrix elements.

Question

Accepted Answer

A spiral traversal of a 2-D matrix involves visiting elements in a spiral order, starting from the top-left corner.

Initialization: Define boundaries for the top, bottom, left, and right of the matrix.
Traversal Order: Move right across the top row, then down the right column, then left across the bottom row, and finally up the left column.
Boundary Adjustment: After each direction, adjust the boundaries to move inward for the next layer of the spiral.
Termination: Continue until all elements are visited, which occurs when the top boundary exceeds the bottom or the left exceeds the right.
Example: For a matrix [[1, 2, 3], [4, 5, 6], [7, 8, 9]], the spiral order is [1, 2, 3, 6, 9, 8, 7, 4, 5].

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