code: function getMedian (args) {
    if (!args.length) return 0
    var numbers = args.slice(0).sort(function (a, b) { return a - b })
    var middle = Math.floor(numbers.length / 2)
    var isEven = numbers.length % 2 === 0
    var res = isEven ? (numbers[middle] + numbers[middle - 1]) / 2 : numbers[middle]
    return Number(res.toFixed(2))
  }
docs: Get the median from an array of numbers.