7、已知一棵树的中序遍历为DBGEACF,后序遍历为DGEBFCA,求这棵树的前序遍历。(字母和字母之间不要有空格) The infix order sequence of a tree is DBGEACF, and its post order sequence is DGEBFCA, please write down its preorder sequence. (There is no blank space between letters)

时间:2023-12-25 10:34:04

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