快速排序

Posted 2021-03-21 zh718594493

$arr= array(2,13,42,34,56,23,67,365,87665,54,68,3);
	$info = quick_sort($arr);
	print_r($info);
	function quick_sort($arr){
			if(count($arr) <= 1){
				return $arr;
			}
			$left = array();
			$right = array();
			$middle= $arr[0];
			for($i=1;$i<count($arr);$i++){
				if($arr[$i] < $middle){
					array_push($left,$arr[$i]);
				}else{
					array_push($right,$arr[$i]);
				}
			}
			$left = quick_sort($left);
			$right = quick_sort($right);
			$arr2 = array_merge($left,array($middle),$right);

			return $arr2;
	}