Rotate Matrix 90 Degrees
2D Arrays (Matrices) DSA practice problem on Onlearn.
Difficulty: medium.
Topics: Rotate a Matrix 90 Degrees Clockwise, Matrices, Two-dimensional Array Traversal, In-place Algorithm, Time Complexity, Space Complexity, Arrays, matrix, complexity analysis, space complexity, matrix manipulation, matrix operations, Arrays, Matrix Manipulation.
Rotate Image You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees clockwise. Note that you have to rotate the image in place , which means modifying the input 2D matrix directly. DO NOT allocate another 2D matrix and do the rotation. Examples Example 1: Input: matrix = [[1,2,3],[4,5,6],[7,8,9]] Output: [[7,4,1],[8,5,2],[9,6,3]] Explanation: Rotate the matrix by 90 degrees clockwise. Example 2: Input: matrix = [[5,1,9,11],[2,4,8,10],[13,3,6,7],[15,14,12,16]] Output: [[15,13,2,5],[14,3,4,1],[12,6,8,9],[16,7,10,11]] Explanation: Rotate the matrix by 90 degrees clockwise.