机器人能否返回原点

function judgeCircle(moves: string): boolean {
  // 数组麻烦，选择更简单的形式
  let x = 0, y = 0
  for (const move of moves) {
    if (move === 'U') y += 1
    if (move === 'R') x += 1
    if (move === 'D') y -= 1
    if (move === 'L') x -= 1
  }

  return x === 0 && y === 0
}