题解 | #没有重复项数字的全排列#

JS+正则表达式

let a = readline().split(';')
let [x, y] = [0, 0]
let reg = /^[A,D,W,S][0-9]{1,2}$/
for (let i = 0; i < a.length; i++) {
  if (reg.test(a[i])) {
    // console.log(a[i])
    let num = parseInt(a[i].slice(1))
    switch (a[i].charAt(0)) {
      case 'A':
        x -= num
        break
      case 'D':
        x += num
        break
      case 'W':
        y += num
        break
      case 'S':
        y -= num
      default:
        break
    }
  }
}

console.log(x+','+y)