Median

This algorithm computes the median of the given set of numbers.



									function Median($data)
{
	$dataSize = count($data);
	
	sort($data);

	if ($dataSize % 2 == 0)
		return ($data[$dataSize / 2 - 1] + $data[$dataSize / 2]) / 2;
	else
		return $data[$dataSize / 2];
}
								


Example

									$data = array( 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 );
$median = Median($data);
								


Output

									5.5