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krahets
2023-05-10 20:59:33 +08:00
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chapter_tree/binary_tree_traversal.md
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@@ -651,7 +651,7 @@ comments: true
递归过程可分为“递”和“归”两个相反的部分。“递”表示开启新方法，程序在此过程中访问下一个节点；“归”表示函数返回，代表该节点已经访问完毕。如下图所示，为前序遍历二叉树的递归过程。
=== "<1>"
![preorder_step1](binary_tree_traversal.assets/preorder_step1.png)
![前序遍历的递归过程](binary_tree_traversal.assets/preorder_step1.png)
=== "<2>"
![preorder_step2](binary_tree_traversal.assets/preorder_step2.png)