随笔分类 - 树
摘要:d题目链接: POJ 3253 Describe: Farmer John wants to repair a small length of the fence around the pasture. He measures the fence and finds that he needs N
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摘要:哈夫曼树: 定义: 给定N个权值作为N个叶子结点,构造一棵二叉树,若该树的带权路径长度达到最小,称这样的二叉树为最优二叉树,也称为哈夫曼树(Huffman Tree)。哈夫曼树是带权路径长度最短的树,权值较大的结点离根较近。(摘自:百度百科) 基本术语: 路径长度:从根节点到某节点通路上分支的数目,
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摘要:题目链接:POJ 2309 Describe: Consider an infinite full binary search tree (see the figure below), the numbers in the nodes are 1, 2, 3, .... In a subtree w
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摘要:题目链接: POJ 2455 Describe: Little Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees
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摘要:题目链接: POJ 2499 Describe: Background Binary trees are a common data structure in computer science. In this problem we will look at an infinite binary t
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摘要:题目通道:POJ 1330 Describe: A rooted tree is a well-known data structure in computer science and engineering. An example is shown below: In the figure, ea
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摘要:定义: 树是n(大于零)个节点的有限集,集合满足以下条件: 1、有且仅有一个节点没有前节点(父节点)该节点称为树的根。 2、除根以外,其它每个节点都有且仅有一个前节点。 3、除根以外,每一个节点都通过唯一的路径连接到根。这条路径由根开始,而末端就是该节点,并除根以外,路径上每一个节点都是前一个节点的
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