题解 | #坐标移动#

import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * HJ17 坐标移动
 * @author d3y1
 */
public class Main {
    public static void main(String[] args) {
        solution1();
        // solution2();
    }

    /**
     * 字符串
     */
    private static void solution1(){
        Scanner in = new Scanner(System.in);
        String line = in.nextLine().trim();
        String[] moves = line.split(";");

        int x=0,y=0;
        char direct;
        int number;
        for(String move: moves){
            if(isValid(move)){
                direct = move.charAt(0);
                number = Integer.valueOf(move.substring(1));
                switch(direct){
                    case 'A': {x -= number; break;}
                    case 'D': {x += number; break;}
                    case 'W': {y += number; break;}
                    case 'S': {y -= number; break;}
                    default: break;
                }
            }
        }

        System.out.print(x+","+y);
    }

    /**
     * 校验移动是否合法
     * @param move
     * @return
     */
    private static boolean isValid(String move){
        // String regex = "[ADWS]\\d{1}|[ADWS][1-9]\\d{1}";
        String regex = "[ADWS][0-9]{1,2}";
        if(move.matches(regex)){
            return true;
        }

        return false;
    }

    /**
     * 字符串
     */
    private static void solution2(){
        Scanner in = new Scanner(System.in);
        String line = in.nextLine().trim();
        String[] moves = line.split(";");

        int x=0,y=0;
        char direct;
        int number;
        for(String move: moves){
            if(checkValid(move)){
                direct = move.charAt(0);
                number = Integer.valueOf(move.substring(1));
                switch(direct){
                    case 'A': {x -= number; break;}
                    case 'D': {x += number; break;}
                    case 'W': {y += number; break;}
                    case 'S': {y -= number; break;}
                    default: break;
                }
            }
        }

        System.out.print(x+","+y);
    }

    /**
     * 校验移动是否合法
     * @param move
     * @return
     */
    private static boolean checkValid(String move){
        // String regex = "[ADWS]\\d{1}|[ADWS][1-9]\\d{1}";
        String regex = "[ADWS][0-9]{1,2}";
        Pattern pattern = Pattern.compile(regex);
        Matcher matcher = pattern.matcher(move);
        if(matcher.matches()){
            return true;
        }

        return false;
    }
}