From a78436b51bad9d11b7f2f65b0e738dfd2ede8fdb Mon Sep 17 00:00:00 2001
From: bt3gl <138340846+bt3gl-cryptographer@users.noreply.github.com>
Date: Tue, 8 Aug 2023 13:44:00 -0700
Subject: [PATCH] Update bt_height.py

---
 trees/bt_height.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/trees/bt_height.py b/trees/bt_height.py
index 65fa688..bb16d53 100644
--- a/trees/bt_height.py
+++ b/trees/bt_height.py
@@ -3,7 +3,9 @@
 # author: bt3gl
 
 def height(root):
+      
       if not root:
-            return -1
+            return 0
+            
       return 1 + max(height(root.left), height(root.right))