Answer: PayPal OA Question 2024 April | Matrix | on-campus

Solution: Rotate Image — Transpose & Flip Approach Rotating an n x n matrix 90 degrees clockwise in-place can be broken down into two simple linear algebra operations: Transpose the matrix: Convert rows into columns. This swaps matrix[i][j] and matrix[j][i] for all elements where i < j. Reverse each row: Flip the matrix horizontally by swapping elements at matrix[i][j] and matrix[i][n - 1 - j]. By performing these steps sequentially, we achieve the 90-degree clockwise rotation without using any extra ...