g1901_2000.s1914_cyclically_rotating_a_grid

Class Solution

java.lang.Object

g1901_2000.s1914_cyclically_rotating_a_grid.Solution

public class Solution
extends 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 and Description
Solution()

Method Summary

Modifier and Type	Method and 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 Detail

Solution

public Solution()

Method Detail

rotateGrid

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