C#打印螺旋数组

using System;

namespace 打印螺旋数组
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] a = new int[] {0,1,2,2,2,1,0,0,1};
            int[] b ={0,0,0,1,2,2,2,1,1};
            int[,] M = new int[3,3] {
                { 1,8,7},
                { 2,9,6},
                { 3,4,5}
            };
            int m, n;
            for (int i = 0; i < 9; i++)
            {
                m = a[i];n = b[i];
                Console.Write(M[m,n]);
            }
        }
    }
}

打印结果：123456789