Create 572-Subtree-of-Another-Tree.py

Author: neetcode-gh

572-Subtree-of-Another-Tree.py

@@ -0,0 +1,23 @@
+# 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 isSubtree(self, s: TreeNode, t: TreeNode) -> bool:
+        if not t: return True
+        if not s: return False
+        
+        if self.sameTree(s, t):
+            return True
+        return (self.isSubtree(s.left, t) or
+                self.isSubtree(s.right, t))
+    
+    def sameTree(self, s, t):
+        if not s and not t:
+            return True
+        if s and t and s.val == t.val:
+            return (self.sameTree(s.left, t.left) and
+                    self.sameTree(s.right, t.right))
+        return False