all tasks

Task/Sorting-algorithms-Permutation-sort/PHP/sorting-algorithms-permutation-sort.php

@@ -0,0 +1,33 @@
+function inOrder($arr){
+	for($i=0;$i<count($arr);$i++){
+		if(isset($arr[$i+1])){
+			if($arr[$i] > $arr[$i+1]){
+				return false;
+			}
+		}
+	}
+	return true;
+}
+
+function permute($items, $perms = array( )) {
+    if (empty($items)) {
+		if(inOrder($perms)){
+			return $perms;
+		}
+    }  else {
+        for ($i = count($items) - 1; $i >= 0; --$i) {
+             $newitems = $items;
+             $newperms = $perms;
+             list($foo) = array_splice($newitems, $i, 1);
+             array_unshift($newperms, $foo);
+             $res = permute($newitems, $newperms);
+			 if($res){
+				return $res;
+			 }		 		
+         }
+    }
+}
+
+$arr = array( 8, 3, 10, 6, 1, 9, 7, 2, 5, 4);
+$arr = permute($arr);
+echo implode(',',$arr);