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<?php class MyMath { /** * @throws Exception */ public function calculateMedian(array $array): int|float { if (!$array) { throw new LengthException('Cannot calculate median because Argument #1 ($array) is empty'); } sort($array); $middleIndex = count($array) / 2; if (is_float($middleIndex)) { return $array[(int) $middleIndex]; } return ($array[$middleIndex] + $array[$middleIndex - 1]) / 2; } } $math = new MyMath; var_export($math->calculateMedian([1, 2, 3, 4, 5]));
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