1914. Cyclically Rotating a Grid

https://leetcode.com/problems/cyclically-rotating-a-grid

Description

You are given an m x n integer matrix grid​​​, where m and n are both even integers, and an integer k.

The matrix is composed of several layers, which is shown in the below image, where each color is its own layer:

A cyclic rotation of the matrix is done by cyclically rotating each layer in the matrix. To cyclically rotate a layer once, each element in the layer will take the place of the adjacent element in the counter-clockwise direction. An example rotation is shown below:

Example 1:


**Input:** grid = [[40,10],[30,20]], k = 1
**Output:** [[10,20],[40,30]]
**Explanation:** The figures above represent the grid at every state.

Example 2:


**Input:** grid = [[1,2,3,4],[5,6,7,8],[9,10,11,12],[13,14,15,16]], k = 2
**Output:** [[3,4,8,12],[2,11,10,16],[1,7,6,15],[5,9,13,14]]
**Explanation:** The figures above represent the grid at every state.

Constraints:

  • m == grid.length

  • n == grid[i].length

  • 2 <= m, n <= 50

  • Both m and n are even integers.

  • 1 <= grid[i][j] <=5000

  • 1 <= k <= 109

ac

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