3668

Author: amirulislam-16

Easy/3668. Restore Finishing Order/solution.php

@@ -0,0 +1,22 @@
+<?php
+class Solution
+{
+    /**
+     * @param Integer[] $order
+     * @param Integer[] $friends
+     * @return Integer[]
+     */
+    public function recoverOrder($order, $friends)
+    {
+        $friendFlip = array_flip($friends);
+
+        $result = [];
+
+        foreach ($order as $value) {
+            if (isset($friendFlip[$value])) {
+                $result[] = $value;
+            }
+        }
+        return $result;
+    }
+}