SpiralMatrix

package spiralmatrix;

import java.util.Scanner;
/*
 * @author Georgi Machkanov
 */
public class SpiralMatrix {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("x = ");
        int x = input.nextInt();
        System.out.print("y = ");
        int y = input.nextInt();

        System.out.println();
        int[][] arrInt = new int[y][x];

        /* Generate matrix [x,y] */

        for (int row = 0; row < y; row++)
        {
            for (int col = 0; col < x; col++)
            {
                arrInt[row][col] = x * row + col + 1;
            }
        }
        /* Print matrix [x,y] */

        for (int a = 0; a < y; a++)
        {
            for (int b = 0; b < x; b++)
            {
                System.out.format("%5d", arrInt[a][b]);
            }
            System.out.println();
        }

        System.out.println();

        /* Print matrix in spiral form */

        byte direction = 0; /*0-right, 1-down, 2-left, 3-right*/
        int row = 0, col = 0;
        int matrixIndex = 0;

        for (int k = 0; k < y; k++)
        {
            for (int c = 0; c < x; c++)
            {

                System.out.print(arrInt[row][col] + " ");
                if (direction == 0) //right
                {
                    if (col + 1 + matrixIndex >= x)
                    {
                        direction = 1;
                        row++;
                    }
                    else
                    {
                        col++;
                    }
                }
                else if (direction == 1) //down
                {
                    if (row + 1 + matrixIndex >= y)
                    {
                        direction = 2;
                        col--;
                    }
                    else
                    {
                        row++;
                    }
                }
                else if (direction == 2) //left
                {
                    if (col - 1 - matrixIndex < 0)
                    {
                        direction = 3;
                        row--;
                    }
                    else
                    {
                        col--;
                    }
                }
                else if (direction == 3) //up
                {
                    if (matrixIndex + 1 == row)
                    {
                        matrixIndex++;
                    }
                    if (row - 1 - matrixIndex < 0)
                    {
                        direction = 0;
                        col++;
                    }
                    else
                    {
                        row--;
                    }
                }
            }
        }
        System.out.println();
        System.out.println();

    }

}