PeekAndPoke\Component\Psi\Operation\Terminal\MedianOperation::apply()

Complexity

Conditions	4
Paths	3

Size

Total Lines	25
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	14
CRAP Score	4

Importance

Changes

0

<?php
    public function apply(\Iterator $set)
    {
        /** @var float[] $data */
        $data  = array_values(iterator_to_array($set));
        $count = count($data);

        if ($count === 0) {
            return 0;
        }

        sort($data);

        $middle = (($count + 1) / 2) - 1;
        $left   = (int) floor($middle);
        $right  = (int) ceil($middle);

        $leftVal = $data[$left];
        $rightVal = $data[$right];

        if (!is_scalar($leftVal) || !is_scalar($rightVal)) {
            return 0;
        }

        return ($data[$left] + $data[$right]) / 2;
    }
}