题解 | #坐标移动#

let line = readline()
let arr = line.split(';')  //分割字符串位数组
let reg = /^(A|S|W|D){1}[0-9]{1,2}$/
let newarr = arr.filter(function(item){ //过滤数组
    return reg.test(item)
})
let x = 0
let y = 0
newarr.forEach(function(item){  //坐标变换
    let dir = item.charAt(0)
    let val = Number(item.slice(1))
    switch(dir){
        case "A":x-=val
            break
        case "S":y-=val
            break
        case "W":y+=val
            break
        case "D":x+=val
    }
})
print(x+','+y)