Hackerrank challenge - Mini-Max Sum - https://www.hackerrank.com/challenges/mini-max-sum/problem

miniMaxSum.php

function miniMaxSum($arr) {
    $minArr = min($arr);
    $maxArr = max($arr);

    if ($minArr !== $maxArr) {
        $miniSum = array_sum(array_diff($arr, [$maxArr]));
        $maxSum = array_sum(array_diff($arr, [$minArr]));
    } else {
        // Case 13: 5 elements are the sames
        unset($arr[0]);
        $maxSum = $miniSum = array_sum($arr);
    }

    echo $miniSum . " " . $maxSum;
}