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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 41 行
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<pre align="left">
<b><font face="Arial, Helvetica, sans-serif" size="4" color="#FF0000">Every binary tree has
a unique pair of preorder-inorder sequence
<font color="#000000">inorder (preorder ) permutation :</font></font><font face="Arial, Helvetica, sans-serif" size="4" color="#000000">
the order in which its nodes are visited during an inorder
(preorder ) traversal of the tree.
<i><font color="#FF0000">If </font></i>nodes are numbered such that its preorder permutation 1,2,...,n,
<i><font color="#FF0000">then </font></i>
1.distinct binary trees define distinct inorder permutation.
2.the number of distinct binary trees is equal to the
number of distinct inorder permutation obtainable from
binary tree having the its preorder permutation, 1,2,...,n.</font></b>
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