1013_digital_root

A*算法 1、将开始节点放入开放列表(开始节点的F和G值都视为0) 2、重复以下步骤: 在开放列表中查找具有最小F值的节点,并把查找到的节点作为当前节点 把当前节点从开放列表删除, 加入到封闭列表. (A* algorithm 1, will begin to node placed in the and opening up list of (the began to node of the F and G values ​ ​ are regarded as 0) 2, repeat the the following steps: to Find a the has a the the smallest F value of the node in the the and opening up list of, and put Find a to the node as the current node current node is removed from the open list, added to the closed list.)

利用双向链表实现对两大整数的相加运算。 可以修改数组长度实现更大整数的相加(Realize the use of two-way linked list of integers the sum of the two operations. Can modify the array length to achieve a greater sum of integers)

中科大数据结构全部上机实验的实验程序以及报告，内容包括多项式，图，栈，SQL语言……(All experimental procedures USTC data structures as well as reports on experiments, including polynomial, maps, stack, SQL language ......)

冒泡优化： 如果一个序列是int n[]={1,2,3,4,5,6,7,8,9} , 用正常的冒泡排序需要排8次才行，优化之后1次就好，也就是说序列越接近于正常序列，改进之后的冒泡排序的次数就越少，这样会给一个冒泡排序算法带了很大的效率。 思想：添加一个boolean变量用来判断冒泡是否是已经排好了顺序，如果boolean的值为false，说明是已经排好了，如果boolean的值true，说明没有排好，继续排。(If a sequence is int n [] = {, 1,2,3,4,5,6,7,8,9} need to row 8 times the job after optimization times like normal bubble sort, but alsomeans that the sequence is more close to the normal sequence, improved bubble sort, the less the number, which would give a bubble sort algorithm with a great deal of efficiency. Idea: add a boolean variable used to determine the bubble whether it is already lined up the order, if the boolean is false, indicating already lined up, if the boolean value of true, did not line up, continue to row.)

数据结构经典算法 约瑟夫问题 c++ 已经测试通过(josephus c++)

Dijlstra算法 对任意图，选择合适的数据结构表示图，在此基础上实现求解最短路径的Dijkstra算法(Dijlstra algorithm to arbitrary map, select the appropriate data structures that map, on this basis to achieve solution of the Dijkstra shortest path algorithm)

读取数据，统计所得到的文件中每个字母的权值，创建哈夫曼树，哈夫曼编码。哈夫曼解码，解码后内容写入到指定的文件。 读取数据里面的内容是由英文单词组成。读取文件的时候传入文件存放的路径、读取方式以及读出以后存放的数组，最终可以得到一个存放目标文件内容的数组。 将得到的数组进行字母权值的统计，统计每个字母出现的次数，次数即为每个字母的权值。 将得到的字符数组与权值数组作为创建哈夫曼树的依据，哈夫曼树根据每个字母权值的大小来创建，每个节点，包括权值、父节点、左子、右子和字母本身。 根据哈夫曼树进行编码。形成目标文件的哈夫曼编码，将此编码返回。 根据哈夫曼树得到的数组即为解码数组，解码数组作为解码的结果返回。 写入输出文件，将解码得到的数组、文件的完整路径以及文件的写方式作为参数传入，将数组写入到相应的文件中。 (Read the data, statistical documents obtained weights for each letter, create a Huffman tree, Huffman coding. Huffman decoding, the decoded contents are written to the specified file. Read the content inside is composed of English words. When the incoming file to read the file storage path, read mode and read out after storage array that can eventually get a storage target file contents of the array. The resulting array of letter weights statistics, statistical number of occurrences of each letter, the number is the weight of each letter. The resulting character array with the weights array as the basis for creating Huffman tree, Huffman tree based on the size of the weights of each letter to create, for each node, including weights, parent, left child, right child, and letter itself. According to Huffman coding. The formation of the target file Huffman coding, this code returns. According to Huffman decoding the resulting array is an array, the decoder decodes the result is retur)

这是acm高手楼天城的比赛代码，很有用哦，对于提高算法非常有用(This is a master of building Tiancheng acm game code, very useful oh, for improving the algorithm)

运用二叉树求代数表达式的值，将代数表达式的每个符号用二叉树结点表示，遍历图的每一结点，按结点值得不同采用不同运算方式(Solving algebraic expressions binary tree)

约瑟夫环，数据结构算法，挺有意思，看看，看看(ysphdfgfgf)