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第1题
给定如第一题所示的一棵树,其后序遍历为__________(为便于系统批改,元素之间不要有空格)
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第2题
给定如第一题所示的一棵树,其层次遍历为__________(为便于系统批改,元素之间不要有空格)
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第3题
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)
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第4题
已知一棵树的前序遍历为ABDEGCF,中序遍历为DBGEACF,求这棵树的后序遍历。(字母和字母之间不要有空格) The preorder sequence of a tree is ABDEGCF, and its infix order sequence is DBGEACF, please write down its post order sequence. (There is no blank space between letters)
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第5题
已知一棵树的前序遍历为ABDEGCF,中序遍历为DBGEACF,求这棵树的后序遍历。(字母和字母之间不要有空格) The preorder sequence of a tree is ABDEGCF, and its infix order sequence is DBGEACF, please write down its post order sequence. (There is no blank space between letters)
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