graph-DFS

实现超市中排队购物用时最短，是计算机算法设计与分析中的一道题。自己写的程序，原创！(Achieve queued supermarket shopping with the shortest, is a question in the design and analysis of computer algorithms. Write their own procedures, original!)

使用三叉链表实现的哈夫曼树,统计inputfile1.txt中各字符的出现频率，并据此构造Huffman树，编制Huffman 码；根据已经得到的编码，对01形式的编码段进行译码。 具体的要求： 1．将给定字符文件编码，生成编码，输出每个字符出现的次数和编码； 2．将给定编码文件译码，生成字符，输出编码及其对应字符。 (Emergence of the frequency of each character in the trigeminal lists using the Huffman tree, statistics inputfile1.txt, and accordingly the Huffman tree structure, preparation of Huffman code according to the coding has been. 01 to form the code segment for decoding. Specific requirements: 1 coding the given character file, generating the encoding, and outputting the number and encoding of each character 2 will be given the encoding file decoding, generating the character, the output code and its corresponding character.)

最优二叉搜索树问题具有最优子结构性质，即其任意一棵子树都是一棵独立的最优二叉搜索树，所以可以采用动态规划方法，并且在每次更新时保存子树的根。(Optimal binary search tree problem has optimal substructure property that any of its sub-tree are an independent optimal binary search tree, so you can use dynamic programming methods, and save each update subtree roots.)

链表L，创建公有成员函数Split（A,B ），创建2个新表A,B，使的A 中含有L中奇数位置元数，B中含L偶数位置元数 (Chain L, create public member function Split (A, B), to create two new tables A, B, A so containing L odd position of a few yuan, B-L even a few locations yuan)

这是数据结构很重要的程序，主要是课后题的答案，和代码，功能很强大(the data struct of the book)

说明：  子集和数问题.rar，用C++写的，可以运行(Subset of several problems. Rar, written in C++, you can run)

表达式cpp实现 数据结构实验源代码 实现前序、中序、后序表达式(Expression codes Formerorder expressions regular expression&Postorder expressions )

说明：  贪心方法是一种改进了的分级处理方法。它首先根据题意，选取一种量度标准。然后按这种量度标准对这n个输入排序，并按排序一次输入一个量。如果这个输入和当前已构成在这种量度意义下的部分最优解加在一起不能产生一个可行解，则不把此解输入加到这部分解中。这种能够得到某种度量意义下的最优解的分级处理方法称为贪心方法。(greedy method is an improvement of the classification methods. According to its first title Italy, and a selection of standards of measurement. Then, under such a standard measure of this sort n input, with an input an order volume. If the input current and constitutes a measure of significance in this part of the optimal solution together not produce a feasible solution. this solution will not put this added to the importation of decomposition. This can be a meaningful measure of the optimal solution hierarchical method, known as greedy method.)

哈夫曼树可以使读者快速方便的查找所需文件(Huffman tree allows readers to quickly and easily find the file)

拓扑排序 -打印输出计算机本科专业4年每学期的课表(Topological sort - computer printout of undergraduate curriculum of each semester for 4 years)