题解 | 坐标移动

import java.util.Scanner; 
import java.util.ArrayList;

// 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);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
            String[] a = in.nextLine().trim().split(";");
            ArrayList<String> ss = new ArrayList<>();
            for(String s:a){
                // System.out.print(s+" ");
                if(!s.isEmpty()&&
                s.length()>1&&
                s.length()<4&&
                (s.charAt(0)=='A'||
                s.charAt(0)=='W'||
                s.charAt(0)=='S'||
                s.charAt(0)=='D')){
                    int ll = 0;
                    for(int i = 1;i<s.length();i++){
                        if('A'<=s.charAt(i)&&s.charAt(i)<='Z'){
                            ll++;
                        }
                    }
                    if(ll==0){
                        ss.add(s);
                    }

                }
            }
            int x=0;
            int y=0;
            for(String s:ss){
                if(s.charAt(0)=='A'){
                    int is =Integer.parseInt(s.split("A")[1]);
                    x-=is;
                }
                if(s.charAt(0)=='D'){
                    int is =Integer.parseInt(s.split("D")[1]);
                    x+=is;
                }
                if(s.charAt(0)=='W'){
                    int is =Integer.parseInt(s.split("W")[1]);
                    y+=is;
                }
                if(s.charAt(0)=='S'){
                    int is =Integer.parseInt(s.split("S")[1]);
                    y-=is;
                }
            }
            System.out.print(x+","+y);
        }
    }
}