Package g1901_2000.s1914_cyclically_rotating_a_grid

Class Solution

java.lang.Object
g1901_2000.s1914_cyclically_rotating_a_grid.Solution
public class Solution extends java.lang.Object
1914 - Cyclically Rotating a Grid.

Medium

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:

Return the matrix after applying k cyclic rotations to it.

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

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int[][]
    rotateGrid(int[][] grid, int k)
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • rotateGrid

      public int[][] rotateGrid(int[][] grid, int k)