题解 | #坐标移动#

package edu.shanxi.practise.hj17;

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] zuoBiao = {0,0};//坐标
        String str = sc.nextLine();
        String[] strArr = str.split(";");//用；分开
        for(int i = 0;i < strArr.length;i++) {
            if(strArr[i].length() < 2) continue;//如果出现小于2的字符串，直接跳过
            int shouWei = strArr[i].charAt(0)-'A';//取第一位字符串
            String tempStr = strArr[i].substring(1);//截取第一位字符串
            if(isNum(tempStr)) {//判断除第一位的字符串是否为数字
                switch (shouWei) {
                    case 0://A
                        zuoBiao[0] -= Integer.parseInt(tempStr);//x坐标左移
                        break;
                    case 3://D
                        zuoBiao[0] += Integer.parseInt(tempStr);//x坐标右移
                        break;
                    case 18://S
                        zuoBiao[1] -= Integer.parseInt(tempStr);//y坐标左移
                        break;
                    case 22://W
                        zuoBiao[1] += Integer.parseInt(tempStr);//y坐标右移                     
                        break;
                        
                    default:
                        break;
                }                
            }
        }
        System.out.print(zuoBiao[0] + "," + zuoBiao[1]);
        sc.close();
    }
    
    private static boolean isNum(String str) {
        boolean flag = true;
        for(int i = 0;i < str.length();i++) {
            if(str.charAt(i)-'0'<0 || str.charAt(i)-'0'>9) {
                flag = false;
                break;
            }
        }
        return flag;
    }
}