all tasks

Task/Sorting-algorithms-Quicksort/PHP/sorting-algorithms-quicksort.php

@@ -0,0 +1,20 @@
+function quicksort($arr){
+	$loe = $gt = array();
+	if(count($arr) < 2){
+		return $arr;
+	}
+	$pivot_key = key($arr);
+	$pivot = array_shift($arr);
+	foreach($arr as $val){
+		if($val <= $pivot){
+			$loe[] = $val;
+		}elseif ($val > $pivot){
+			$gt[] = $val;
+		}
+	}
+	return array_merge(quicksort($loe),array($pivot_key=>$pivot),quicksort($gt));
+}
+
+$arr = array(1, 3, 5, 7, 9, 8, 6, 4, 2);
+$arr = quicksort($arr);
+echo implode(',',$arr);