paiza Aランクレベルアップメニューの C# へび問題回答例

paiza Aランクレベルアップメニューの C# へび問題を解いてみました。

using System;
using System.Collections.Generic;
class Program
{
    static void Main()
    {
        // 自分の得意な言語で
        // Let's チャレンジ！！
        var arr = Console.ReadLine().Split(' ');
        var H = int.Parse(arr[0]);
        var W = int.Parse(arr[1]);
        var y = int.Parse(arr[2]);
        var x = int.Parse(arr[3]);
        var N = int.Parse(arr[4]);
        
        var map = new char[H,W];
        for(int i=0;i<H;i++){
            var tmpStr = Console.ReadLine();
            for(int j=0;j<W;j++){
                map[i,j] = tmpStr[j];
            }
        }
        
        var direction = new Dictionary<int,char>();
        for(int i=0;i<N;i++){
            arr = Console.ReadLine().Split(' ');
            direction.Add(int.Parse(arr[0]),arr[1][0]);
        }
        
        var moveTo = 'N'; //first direction
        map[y,x] = '*'; //first position
        
        var time = 0;
        while(time < 100){
            if(direction.ContainsKey(time)){ 
                switch(moveTo){
                    case 'N':
                        if(direction[time] == 'L'){ moveTo = 'W'; }
                        else { moveTo = 'E'; }
                        break;
                    case 'E':
                        if(direction[time] == 'L'){ moveTo = 'N'; }
                        else { moveTo = 'S'; }
                        break;
                    case 'S':
                        if(direction[time] == 'L'){ moveTo = 'E'; }
                        else { moveTo = 'W'; }
                        break;
                    case 'W':
                        if(direction[time] == 'L'){ moveTo = 'S'; }
                        else { moveTo = 'N'; }
                        break;
                }
            }
            switch(moveTo){
                case 'N':
                    if(y == 0) { time = 100; }
                    else if(map[y-1,x] == '*' || map[y-1,x] == '#'){ time = 100; }
                    else { 
                        map[y-1,x] = '*'; 
                        y--;
                    }
                    break;
                case 'E':
                    if(x == W-1) { time = 100; }
                    else if(map[y,x+1] == '*' || map[y,x+1] == '#'){ time = 100; }
                    else { 
                        map[y,x+1] = '*'; 
                        x++;
                    }
                    break;
                case 'S':
                    if(y == H-1) { time = 100; }
                    else if(map[y+1,x] == '*' || map[y+1,x] == '#'){ time = 100; }
                    else { 
                        map[y+1,x] = '*'; 
                        y++;
                    }
                    break;
                case 'W':
                    if(x == 0) { time = 100; }
                    else if(map[y,x-1] == '*' || map[y,x-1] == '#'){ time = 100; }
                    else { 
                        map[y,x-1] = '*'; 
                        x--;
                    }
                    break;
            }
            time++;
        }
        
        for(int i=0;i<H;i++){
            for(int j=0;j<W;j++){
                Console.Write(map[i,j]);
            }
            Console.WriteLine();
        }
    }
}