php 快速排序

<?php//Quick Sortfunction quickSort(array $array){  static $run = 0;    $len = count($array);  if($len <= 1) return $array;  $arrleft=array();  $arrright=array();  $flag = $array[0];  for($i=1;$i<$len;$i++){ if($array[$i]<=$flag){$arrleft[]=$array[$i]; }else{$arrright[] = $array[$i]; }  }   $arrleft = quickSort($arrleft);   $arrright = quickSort($arrright);  $run++;  return array_merge($arrleft,array($flag),$arrright);}$data= array(10,12,43,32,123,12);$newarr = quickSort($data);print_r($newarr);?>

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