Need to print Matrix Spiral of an image

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Nimit Jain 2016-7-6

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https://ww2.mathworks.cn/matlabcentral/answers/293879-need-to-print-matrix-spiral-of-an-image

关闭： John D'Errico 2016-7-6

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Hello, I have written a program in Java to spiral print of 2-dimensional array. Now need that in matlab. My image size is (768, 738, 3)

package ArrayAndString;
public class MatrixSpiral {
  public static void main(String[] args) {
    // TODO Auto-generated method stub
    int[][] a = {{1,2,3,4,5,6},
        {7,8,9,10,11,12},
        {13,14,15,16,17,18}};
    
    System.out.println(a.length+" "+a[0].length);
    int row = a.length;
    int col = a[0].length;
    
    spiralPath(row, col, a);
    
  }
  private static void spiralPath(int m, int n, int[][] a) {
     int i, k = 0, l = 0;
     
        /*  k - starting row index
            m - ending row index
            l - starting column index
            n - ending column index
            i - iterator
        */
     
     while(k<m && l<n)
     {
       // Print the first row from the remaining rows
       for(i=l; i<n;++i)
       {
         System.out.print(a[k][i]+" ");
       }
       k++;
       
       /* Print the last column from the remaining columns */
       for(i = k;i<m;++i)
       {
         System.out.print(a[i][n-1]+" ");
       }
       n--;
       
       /* Print the last row from the remaining rows */
       
       if(k<m)
       {
         for(i=n-1;i >= l ;--i)
         {
           System.out.print(a[m-1][i]+" ");
         }
         m--;
       }
       
       /* Print the first column fromthe remaining columns */
       
       if(l<m)
       {
         for(i = m-1; i>= k; --i)
         {
           System.out.print(a[i][l]+" ");
         }
         l++;
       }
       
       
       
     }
  }
}