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Merge pull request #178 from jojoo15/patch-10
添加 0700.二叉搜索树中的搜索 python版本
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@ -212,13 +212,18 @@ Python:
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递归法:
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```python
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# 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 searchBST(self, root: TreeNode, val: int) -> TreeNode:
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if root is None:
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return None
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if val < root.val: return self.searchBST(root.left, val)
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elif val > root.val: return self.searchBST(root.right, val)
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else: return root
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if not root or root.val == val: return root //为空或者已经找到都是直接返回root,所以合并了
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if root.val > val: return self.searchBST(root.left,val) //注意一定要加return
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else: return self.searchBST(root.right,val)
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```
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迭代法:
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@ -243,4 +248,4 @@ Go:
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* 作者微信:[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)
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* B站视频:[代码随想录](https://space.bilibili.com/525438321)
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* 知识星球:[代码随想录](https://mp.weixin.qq.com/s/QVF6upVMSbgvZy8lHZS3CQ)
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<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>
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<div align="center"><img src=../pics/公众号.png width=450 alt=> </img></div>
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