From d8d68dd126f66649da2fddedea81b3c828947a4d Mon Sep 17 00:00:00 2001
From: ananya321 <76964451+ananya321@users.noreply.github.com>
Date: Sat, 23 Oct 2021 12:11:16 +0530
Subject: [PATCH] Create binary tree inorder traversal

---
 binary tree inorder traversal | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 binary tree inorder traversal

diff --git a/binary tree inorder traversal b/binary tree inorder traversal
new file mode 100644
index 00000000..cff53921
--- /dev/null
+++ b/binary tree inorder traversal	
@@ -0,0 +1,21 @@
+# Definition for a binary tree node.
+# class TreeNode:
+#     def __init__(self, val=0, left=None, right=None):
+#         self.val = val
+#         self.left = left
+#         self.right = right
+class Solution:        
+    def inorderTraversal(self, root: Optional[TreeNode]) -> List[int]:
+        inorder = []
+        stack = [root]
+        while stack:
+            root = stack[-1]
+            if root:
+                stack.append(root.left)
+            else:
+                stack.pop()
+                if stack:
+                    root = stack.pop()
+                    inorder.append(root.val)
+                    stack.append(root.right)
+        return inorder