坦克的算法

【核心代码】

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

namespace test
{
    class Program
    {
        static void Main(string[] args)
        {
            //坦克信号：
            //MTMPRPMTMLMRPRMTPLMMTLMRRMP
            var xinhao = "MTMPRPMTMLMRPRMTPLMMTLMRRMP";

            //坦克坐标
            var xy = new int[] { 11, 39 };

            //坦克运行方向
            string direction = "W";

            foreach (var xh in xinhao)
            {
                switch (xh)
                {
                    case 'L':
                    case 'R':
                        direction = set_news(direction, xh);
                        break;
                    case 'M':
                        xy = set_xy(xy, direction);
                        break;
                    default:
                        break;
                }
            }

            Console.Write("{0},{1}", xy[0], xy[1]);
        }

        //旋转
        private static string set_news(string news, char xh)
        {
            string directions = "NESW";
            var index = directions.IndexOf(news);
            if (xh == 'R')
            {
                return directions[index >= 3 ? 0 : index   1].ToString();
            }
            else
            {
                return directions[index <= 0 ? 3 : index - 1].ToString();
            }
        }

       //移动
        private static int[] set_xy(int[] xy, string news)
        {
            switch (news)
            {
                case "N"://北
                    xy[1] = xy[1]   1;
                    break;
                case "E"://东
                    xy[0] = xy[0]   1;
                    break;
                case "S"://南
                    xy[1] = xy[1] - 1;
                    break;
                case "W"://西
                    xy[0] = xy[0] - 1;
                    break;
            }

            return xy;
        }
    }
}