dec 1

Author: alainlou

p104.py

@@ -0,0 +1,7 @@
+from DS.TreeNode import TreeNode
+
+class Solution:
+    def maxDepth(self, root: TreeNode) -> int:
+        if root == None:
+            return 0
+        return 1 + max(self.maxDepth(root.left), self.maxDepth(root.right))