哈夫曼树与哈弗曼编码 哈夫曼树 带权路径长度(WPL):设二叉树有n个叶子结点,每个叶子结点带有权值 Wk,从根结点到每个叶子结点的长度为 Lk,则每个叶子结点的带权路径长度之和就是: WPL = 最优二叉树或哈夫曼树: WPL最小的二叉树 哈夫曼树的特点: ①没有度为1的结点 ②n个叶子结点的哈夫曼树共有2n-1个结点 ③哈夫曼树的任意非叶节点的左右子树交换后仍是哈夫曼树 ④对同一组权值{w1 ,w2 , -- , wn},存在不同构的两棵哈夫曼树 哈夫曼树的构造 每次把权值最小的两颗二叉树合…

以现在的生产力,是做不到一天一篇博客了.这题给我难得不行了,花了两天时间在PAT上还有测试点1没过,先写上吧.记录几个做题中的难点:1.本来比较WPL那块我是想用一个函数实现的,无奈我对传字符串数组无可奈何:2.实在是水平还不够,做题基本上都是要各种参考,当然以课件(网易云课堂<数据结构>(陈越,何钦铭))中给的方法为主,可是呢,关于ElementType的类型我一直确定不下来,最后还是参考了园友糙哥(http://www.cnblogs.com/liangchao/p/4286598.htm…

哈夫曼树 Yes 需满足两个条件:1.HuffmanTree 结构不同,但WPL一定.子串WPL需一致 2.判断是否为前缀码 开始判断用的strstr函数,但其传值应为char *,不能用在string类型.所以后来改用substr. substr(start,length);start为子串起始位置,length为从起始位置的长度. #include <iostream> #include <string> using namespace std; int main() { &q…

5-9 Huffman Codes   (30分) In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer science. As a professor who gives the final exam problem o…

题目地址 https://pta.patest.cn/pta/test/16/exam/4/question/671 5-9 Huffman Codes   (30分) In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer…

题目内容 In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer science. As a professor who gives the final exam problem on Huffman codes, I am…

哈夫曼树(Huffman Tree)与哈夫曼编码(Huffman coding)…

In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer science. As a professor who gives the final exam problem on Huffman codes, I am enco…

In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer science. As a professor who gives the final exam problem on Huffman codes, I am enco…

05-树9 Huffman Codes(30 分) In 1953, David A. Huffman published his paper "A Method for the Construction of Minimum-Redundancy Codes", and hence printed his name in the history of computer science. As a professor who gives the final exam problem o…