快递排序
快递排序PHP实现

    $unsorted = array(2,4,5,63,4,5,63,2,4,43);     function quicksort($array)    {        if (count($array) == 0)            return array();         $pivot = $array[0];        $left = $right = array();         for ($i = 1; $i < count($array); $i++) {            if ($array[$i] < $pivot)                $left[] = $array[$i];            else                $right[] = $array[$i];        }         return array_merge(quicksort($left), array($pivot), quicksort($right));    }     $sorted = quicksort($unsorted);     print_r($sorted);

var a = [2,4,5,63,4,5,63,2,4,43]; function quicksort(arr){    if (arr.length == 0)        return [];     var left = new Array();    var right = new Array();    var pivot = arr[0];     for (var i = 1; i < arr.length; i++) {        if (arr[i] < pivot) {           left.push(arr[i]);        } else {           right.push(arr[i]);        }    }     return quicksort(left).concat(pivot, quicksort(right));} document.write(quicksort(a));