题解 | #坐标移动#
坐标移动
http://www.nowcoder.com/practice/119bcca3befb405fbe58abe9c532eb29
这是大佬的代码,通过正则表达式和子字符串减少麻烦的流程,但是空间上使用的更多
import java.io.*;
public class Main{
public static void main(String[] args) throws IOException {
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
String[] in = bf.readLine().split(";");
int x = 0;
int y = 0;
for(String s : in){
// 不满足题目给定坐标规则
if(!s.matches("[WASD][0-9]{1,2}")){
continue;
}
int val = Integer.valueOf(s.substring(1));
switch(s.charAt(0)){
case 'W':
y += val;
break;
case 'S':
y -= val;
break;
case 'A':
x -= val;
break;
case 'D':
x += val;
break;
}
}
System.out.println(x+","+y);
}
}