HDOJ 1033 Edge

HDACM 1033

题意就是 画线，A表示顺时针旋转90度，v表示逆时针旋转90度。

import java.util.Scanner;

public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		while (sc.hasNext()) {
			String str = sc.next();
			System.out.println("300 420 moveto");
			System.out.println("310 420 lineto");
			int x = 310;
			int y = 420;
			int dirct = 1; // 1左，3右，0上，2下
			int i = 0;
			while (i < str.length()) {
				if (str.charAt(i) == 'A') {
					dirct = (dirct + 1) % 4;
				} else {
					dirct = (dirct - 1 + 4) % 4;
				}
				switch (dirct) {
				case 0:
					y += 10;
					break;
				case 1:
					x += 10;
					break;
				case 2:
					y -= 10;
					break;
				case 3:
					x -= 10;
					break;
				}
				System.out.println(x+" "+y+" lineto");
				i++;
			}
			System.out.println("stroke");
			System.out.println("showpage");
		}
		sc.close();
	}

}