题解 | 坐标移动

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int x  = 0;
        int y  = 0;
        String s = sc.nextLine();
        String commonds[] = s.split(";");
        for(String commond:commonds){
            if(commond.isEmpty()){
                continue;
            }
            if(commond.length()<2||commond.length()>3){
                continue;
            }
            char direction = commond.charAt(0);
            if(direction!='A'&&direction!='D'&&direction!='W'&&direction!='S'){
                continue;
            }
            String distanceStr = commond.substring(1);
            
            try{
                int distance = Integer.parseInt(distanceStr);
            if(distance>99||distance<1){
                continue;
            }
            switch(direction){
                case'A':
                    x  = x-distance;
                    break;
                case'D':
                    x  = x+distance;
                    break;
                case'W':
                    y  = y+distance;
                    break;
                case'S':
                    y  = y-distance;
                    break;
            }
            }catch(NumberFormatException e){
                continue;
            }
        }
        System.out.println(x+","+y);
    }
}

一定要注意，题目中说的指令的长度是3或4。这个3或4是带上；的长度