From e7d855b99ec66c501631e7feac3ed4a68da5f8ad Mon Sep 17 00:00:00 2001
From: bt3gl <138340846+bt3gl-google@users.noreply.github.com>
Date: Sun, 30 Jul 2023 15:51:57 -0700
Subject: [PATCH] Update construct_tree_inorder_preorder.py

---
 trees_and_graphs/construct_tree_inorder_preorder.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/trees_and_graphs/construct_tree_inorder_preorder.py b/trees_and_graphs/construct_tree_inorder_preorder.py
index efb6d04..765f32a 100644
--- a/trees_and_graphs/construct_tree_inorder_preorder.py
+++ b/trees_and_graphs/construct_tree_inorder_preorder.py
@@ -1,3 +1,7 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
 def build_tree(preorder: list[int], inorder: list[int]) -> Optional[TreeNode]:
         
         def helper(i_left, i_right, index_map):