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

Complexity

Conditions	4
Paths	5

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	12
CRAP Score	4

Importance

Changes

0

<?php
    public function apply(\Iterator $set)
    {
        /** @var mixed[] $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];

        return is_scalar($leftVal) && is_scalar($rightVal) ? ($data[$left] + $data[$right]) / 2 : 0;
    }