1、二叉树中是否存在节点和为指定值的路径
https://www.nowcoder.com/practice/508378c0823c423baa723ce448cbfd0c?tpId=191&&tqId=37995&rp=1&ru=/activity/oj&qru=/ta/job-code-high-algorithm/question-ranking
![](https://img.haomeiwen.com/i12921408/8b5871214b26b5f1.png)
2、判断t1树中是否有与t2树拓扑结构完全相同的子树
https://www.nowcoder.com/practice/4eaccec5ee8f4fe8a4309463b807a542?tpId=191&&tqId=38002&rp=1&ru=/activity/oj&qru=/ta/job-code-high-algorithm/question-ranking
![](https://img.haomeiwen.com/i12921408/199173fab9225832.png)
3、
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