Leetcode 48.Rotate image (rotated image) thinking and method of solving problems

Rotate Image

You are given a n x n 2D matrix representing an image.

Rotate the image by degrees (clockwise).

Follow up:

Could do this in-place?

Idea: Actually is the rotation array, no difficulty, the code is as follows:

public class Solution {public    void rotate (int[][] matrix) {    int[][] a = new int[matrix.length][matrix.length];
  //implement deep copy for    (int i = 0; i < matrix.length; i++) {for    (int j = 0; J < matrix.length;j++) {    A[i][j] = Matr IX[I][J];    }    }    Data rotation for        (int i = 0; i < a[0].length; i++) {            int k = 0;            for (int j = a.length-1; J >=0; j--) {                matrix[i][k++] = a[j][i];                System.out.print (A[j][i] + "");            }            System.out.println ("");}}    

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Leetcode 48.Rotate image (rotated image) thinking and method of solving problems