55 lines
715 B
Markdown
55 lines
715 B
Markdown
---
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layout: page
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title: Is Sub Tree?
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---
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{% highlight python %}
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class TreeNode:
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def __init__(self, val):
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self.val = val
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self.left = None
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self.right = None
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def isSubTree(s, t):
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if not s:
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return False
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if isSameTree(s, t):
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return True
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return isSubTree(s.left, t) or isSubTree(s.right, t)
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def isSameTree(p, q):
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if p and q:
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return p.val==q.val and isSameTree(p.left, q.left) and isSameTree(p.right, q.right)
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return p is q
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root = TreeNode(1)
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root.left = TreeNode(2)
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root.right = TreeNode(3)
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root2 = TreeNode(1)
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root2.left = TreeNode(2)
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root2.right = TreeNode(3)
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p = root
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q = root2
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print isSubTree(p, q)
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{% endhighlight %}
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