code: function median(array) {
    var length = array.length;
  
    if (length === 0) {
      throw new RangeError("Error");
    }
  
    array.sort(function(a, b) {
      return a - b;
    });
  
    var middle = Math.floor(length / 2);
  
    return length % 2 ? array[middle] : (array[middle] + array[middle - 1]) / 2;
  }
docs: Returns the median of the numbers in `array`.
  
  @param {Array} array Range of numbers to get the median.
  @return {number}
  @example
  
  median([100, -100, 150, -50, 100, 250]);
  // => 100