15 lines
522 B
Python
15 lines
522 B
Python
# Definition for a binary tree node.
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# class TreeNode:
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# def __init__(self, val=0, left=None, right=None):
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# self.val = val
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# self.left = left
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# self.right = right
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class Solution:
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def isSameTree(self, p: Optional[TreeNode], q: Optional[TreeNode]) -> bool:
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if p is None and q is None:
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return True
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elif p is None or q is None or p.val != q.val:
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return False
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return self.isSameTree(p.left, q.left) and self.isSameTree(p.right, q.right)
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