题解 | #坐标移动#

还是字符串判断比较实在

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int x = 0;
        int y = 0;
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String line = in.nextLine();
            String spl[] = line.split(";");
            for(String str:spl){
                if (str.startsWith("A") || str.startsWith("S") || str.startsWith("W")
                   || str.startsWith("D"))
                {
                    String move = "";
                    // 是否中断
                    boolean finish = false;
                    for(int i=1;i<str.length();i++){
                        char c = str.charAt(i);
                        if (c >= '0' && c<='9'){
                            move += String.valueOf(c);
                        }
                        else
                        {
                            finish = true;
                            break;
                        }
                    }
                    if (!finish){
                        char c = str.charAt(0);
                        int speed = Integer.parseInt(move);
                        switch(c){
                            case 'A':
                                x -= speed;
                                break;
                            case 'S':
                                y -= speed;
                                break;
                            case 'W':
                                y += speed;
                                break;
                            case 'D':
                                x += speed;
                                break;
                        }
                    }
                }
            }
            System.out.println(x +","+y);
        }
    }
}