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Grokking the Coding Interview Patterns in C#

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Understand how to rotate an n by n matrix 90 degrees clockwise in place. This lesson helps you implement this key matrix transformation efficiently and correctly, reinforcing skills in in-place algorithms and matrix traversal.

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Statement

Given an n×nn \times n matrix, rotate the matrix 90 degrees clockwise. The performed rotation should be in place, i.e., the given matrix is modified directly without allocating another matrix.

Note: The function should only return the modified input matrix. ...