void setup() {
  float[] numbers = {3.1, 4.1, 5.9, 2.6, 5.3, 5.8};
  println(median(numbers));
  numbers = shorten(numbers);
  println(median(numbers));
}

float median(float[] nums) {
  nums = sort(nums);
  float median = (nums[(nums.length - 1) / 2] + nums[nums.length / 2]) / 2.0;
  return median;
}