zhebanchazhao

说明：  ACM及各类基本算法模板，包括数据结构，计算几何，字符串，图论，数学，高精度等许多常用模板(ACM basic algorithm and various templates, including data structures, computational geometry, string, graph theory, mathematics, high-precision, and many other commonly used templates)

数据结构中链式队列和堆栈的循环用法，非常有用(Queue data structure in the chain and the cycle stack usage, very useful)

数据结构，利用霍夫曼树实现文本数据的压缩。(Huffman data compression and decompression.)

一．问题描述 对2006年度全国80多个城市的每天空气质量状况进行查询、排序等操作。 空气质量状况对象包括城市代码、城市名称、首要污染物、污染指数、污染物级别、空气状况、年、月、日 二、实验要求 1． 普通查询：输入城市名称和城市代码，分别查询该城市每天、每周、每月、每季度和全年的空气质量状况 例子：查询太原市2006年第8周的空气质量状况 2．统计查询： （1）输入城市名称和城市代码，分别查询该城市每周、每月、每季度和全年的空气质量为优、良、轻微污染、轻度污染、重污染的天数 例子：查询石家庄市2006年第2季度空气质量为轻微污染的总天数 （2）根据时间查询空气质量状况：输入周编号、月编号、季度编号或年编号，以及空气质量为优、良、轻微污染、轻度污染、重污染的天数，查找相应的城市名称 例子：查询2006年5月，空气被轻度污染3天以上的城市有哪些？ 3．排序查询 （1）输入周编号、月编号、季度编号或年编号，查询城市空气质量的排行榜 例子：查询2006年第6周，全国空气平均质量最好的前20个城市为哪些？ 三、数据文件 Data.txt(one. Problem Description of the air quality day in 2006 more than 80 cities nationwide query, sorting and other operations. Air Quality objects include city code, city name, the primary pollutant, pollution index, contaminant level, air condition, year, month, day two, experimental requirements 1. General Queries: Enter a city name and city codes, each query in the city daily, weekly, monthly, quarterly example air quality and full year: Queries air quality in Taiyuan first eight weeks of 2006 2. Statistical inquiry: (1) enter a city name and city codes, each query in the city weekly, monthly, quarterly and annual air quality as excellent, good, slight pollution, light pollution, heavy pollution days example: inquiry Shijiazhuang City in 2006 second quarter, the air quality is the total number of days a slight pollution (2) according to time of the query air quality conditions: enter the week number, month number, quarter number or in number, and the air quality is excellent, good, sli)

单链表中的数据元素含有三种字符（字母、数字、其他字符），算法实现构造三个循环链表，是每个循环链表中只含有同一类字符，且利用原表中的结点空间作为这三个表的结点空间。(Singly linked lists of data element contains three characters (letters, Numbers and other characters), the algorithm constructs three circular linked list, each cycle list contains only the same type of character, and make use of the primary node space in a table as a node of the three table space.)

用于迷宫问题的解决用户根据根据要求进行设置即可在屏幕上显示(Maze problems for users in accordance with the requirements set can be displayed on the screen)

实现回溯算法，能解决八皇后问题等～～算法结果优化，时间复杂度较小(Implement backtracking algorithms can solve the eight queens problem, etc. ~ ~)

数据结构c语言版，图的遍历，周游世界，无向图的遍历，包含14个国家。(Data structure c language version, graph traversal, travel around the world, undirected graph traversal, including 14 countries.)

一个简单的求矩阵求逆的c语言算法 一个简单的求矩阵求逆的c语言算法 一个简单的求矩阵求逆的c语言算法(a simple matrix inversion for the C language algorithms for a simple matrix inversion of the c language a simple algorithm The matrix inversion for the C language algorithms for a simple matrix inversion algorithm in C Language)

文件的多路归并排序算法， C++描述（要求待排序文件已经事先有序）(C++ implementation of K-Merge Algorithm)