今天看到园子里有一个登月机器人的面试题,于试着写一下,有一点坑爹的地方是if不能起过5个,下面就有这种情况

if(a){    if(x) code1;    if(y) code2;}

这个我改成

if(a && x) code1;if(a && y) code2;

我这样不是也少了if吗?这坑爹.

下面是一坨C#代码

public class MoonRabbit    {        private string DIR = "NESW";        private Tuple
     
       position;//当前位置        private int direction;//当前的方向        public MoonRabbit(Tuple
      
        position, char direction)        {            this.position = position;            this.direction = DIR.IndexOf(direction);        }        public void Foo(string instruct)        {            char[] ch = instruct.ToArray
       
        ();            for (int i = 0, ct = ch.Length; i < ct; i++)            {                Rotation(ch[i]);                Move(ch[i]);            }        }        public void Show()        {            Console.WriteLine("当前位置({0},{1}),方向{2}", position.Item1, position.Item2, DIR[direction]);        }        private void Rotation(char instruct)        {            if (instruct == 'R') direction = (direction + 1) % 4;            if (instruct == 'L') direction = (direction - 1 + 4) % 4;        }        private void Move(char instruct)        {            int x = position.Item1;            int y = position.Item2;            if (instruct == 'F' && (DIR.IndexOf('E') == direction || DIR.IndexOf('W') == direction))                x = x + (2 - direction); //13 EW            if (instruct == 'F' && (DIR.IndexOf('N') == direction || DIR.IndexOf('S') == direction))                y = y + (1 - direction);//02 NS            position = new Tuple
        
         (x, y);        }    }