有下列二叉树,对此二叉树前序遍历的结果为( ) 。
[img src="https://img.haodaxue.net/uploadimg/image/20210111/20210111120058_67134.png" alt="" />
A.XZCYAB
B.XYZABC
C.XYABCZ
D.XYAZB
查看答案
正确答案: D 答案分析: 对二叉树的前序遍历是指:先访问根结点,然后访问左子树,最后访问右子 树,并且,在访问左、右子树时,先访问根结点,再依次访问其左、右子树。
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