Spiral Matrix

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _12.Fill_Matrix_A
{
    class FillMatrixA
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            int[,] matrix = new int[n, n];

            FillSpral(matrix, n);
            PrintMatrix(matrix);
        }

        private static void FillSpral(int[,] matrix, int n)
        {
            int element = 0;
            int col = -1;
            int row = -1;
            while (element < n * n)
            {
                row++;
                col++;
                while (row < n && matrix[row, col] == 0)
                {
                    element++;
                    matrix[row, col] = element;
                    row++;
                }
                row--;
                col++;
                while (col < n && matrix[row, col] == 0)
                {
                    element++;
                    matrix[row, col] = element;
                    col++;
                }
                col--;
                row--;
                while (row >= 0 && matrix[row, col] == 0)
                {
                    element++;
                    matrix[row, col] = element;
                    row--;
                }
                row++;
                col--;
                while (col >= 0 && matrix[row, col] == 0)
                {
                    element++;
                    matrix[row, col] = element;
                    col--;
                }
            }
        }

        private static void PrintMatrix(int[,] matrix)
        {
            for (int row = 0; row < matrix.GetLength(0); row++)
            {
                for (int col = 0; col < matrix.GetLength(1); col++)
                {
                    Console.Write(matrix[row, col].ToString().PadLeft(3) + " ");
                }
                Console.WriteLine();
            }
        }
    }
}