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docs/chapter_tree/binary_search_tree.md → docs/chapter_tree/update binary_search_tree.md
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@ -74,7 +74,8 @@
假设我们选择右子树的最小节点（中序遍历的下一个节点），则删除操作流程如下图所示。
1. 找到待删除节点在“中序遍历序列”中的下一个节点，记为 `tmp` 。
2. 用 `tmp` 的值覆盖待删除节点的值，并在树中递归删除节点 `tmp` 。
2. 在树中递归删除节点 `tmp` ，注意提前保留 `tmp` 节点的值。。
3. 用 `tmp` 的值覆盖待删除节点的值。
=== "<1>"
![在二叉搜索树中删除节点（度为 2 ）](binary_search_tree.assets/bst_remove_case3_step1.png)