题解 | #坐标移动#

最最最基础的方法，需要考虑条件太多，思路简单，但是不如学学别人的方法

public class Main{
    public static void main(String [] args){
        Scanner sc = new Scanner(System.in);
        String [] str = sc.nextLine().split(";");
        int a = 0;
        int b = 0;
        int op = 0;
        
        for(String s : str){
            if( s == null || s.trim().length() == 0) continue;
            char c0 = s.charAt(0);
            
            
           if(s.length()==3||s.length()==2) {
            if(c0=='A'||c0=='D'||c0=='W'||c0=='S') {
            char c1 = s.charAt(1);
            if(s.length()==3){
            char c2 = s.charAt(2);
            int x = 0, y = 0;
            x = c1 - '0';
            y = c2 - '0';
            if(x>0&&x<=9&&y>=0&&y<=9){
                    if(c0=='A'){a -= (10*x+y);}
                    else if(c0=='S'){ b -= (10*x+y);}
                    else if(c0=='D'){ a += 10*x+y;}
                    else if(c0=='W'){ b += 10*x+y;}
                 }
            }
                else if(s.length()==2){
                     int x = 0;
            x = c1 - '0';
            
                    if(x>0&&x<=9){
                        if(c0=='A'){a -= x;}
                    else if(c0=='S'){ b -= x;}
                    else if(c0=='D'){ a += x;}
                    else if(c0=='W'){ b += x;}
                        
                    }
                    
                }


            }
           }
            
        }
        System.out.println(a+","+b);
        
    }
}