HDU1033 Eage（java）

題目太長…
http://acm.hdu.edu.cn/showproblem.php?pid=1033
題意是：A爲右轉，V爲左轉，初始座標是300，420，每次走10，模擬四個走向就可以了，

import java.util.Scanner;

public class P1033 {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int x, y;
        String str;
        while (scanner.hasNext()) {
            str = scanner.next();
            x = 310;
            y = 420;
            int p = 1; // direction
            System.out.printf("300 420 moveto\n310 420 lineto\n");
            for (int i = 0; i < str.length(); i++) {
                switch (p) {
                case 1://X軸正方向
                    if (str.charAt(i) == 'V') {
                        p = 2;
                        y += 10;
                    } else {
                        p = -2;
                        y -= 10;
                    }
                    break;

                case 2://Y軸正方向
                    if (str.charAt(i) == 'V') {
                        p = -1;
                        x -= 10;
                    } else {
                        p = 1;
                        x += 10;
                    }
                    break;
                case -1://X軸負方向
                    if(str.charAt(i)=='V'){
                        p = -2;
                        y -= 10;
                    }
                    else{
                        p = 2;
                        y+=10;
                    }
                    break; 
               case -2://Y軸負方向
                    if(str.charAt(i)=='V'){
                        p = 1;
                        x+=10;
                    }
                    else{
                        p=-1;
                        x-=10;
                    }
                    break;
                default:
                    break;
                }
                  System.out.printf("%d %d lineto\n", x, y);
            }
            System.out.printf("stroke\nshowpage\n");
        }
        scanner.close();
    }

}