Add another pass to counting sort so maxValue and minValue params aren't needed

[Tyriar]

  var minValue = array[0];
  var maxValue = array[0];
  for (var i = 1; i < array.length; i++) {
    if (array[i] < minValue) {
      minValue = array[i];
    } else if (array[i] > maxValue) {
      maxValue = array[i];
    }
  }