Print matrix in spiral order.

Spiral.java

public class Spiral {

    public static void main(String[] args) {
        int row = Integer.parseInt(args[0]);
        int col = Integer.parseInt(args[1]);
        int[][] matrix = new int[row][col];

        for (int i = 0; i < row; i++) {
            for (int j = 0; j < col; j++) {
                matrix[i][j] = i * col + j + 1;
            }
        }
		
        for (int i = col - 1, j = row - 1, k = 0; i >= 0 && j >= 0; i--, j--, k++) {
            for (int l = k; l < i; l++) { // right
                System.out.print(matrix[k][l]+ " ");
            }
	    
            for (int l = k; l < j; l++) { // down
                System.out.print(matrix[l][i]+ " ");
            }
		
            for (int l = i; l > k; l--) { // left
                System.out.print(matrix[j][l]+ " ");
            }
		
            for (int l = j; l > k; l--) { // up
                System.out.print(matrix[l][k]+ " ");
            }
        }
    }

}