zuixiaoshengchengshu

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)

二叉排序树的建立、插入与删除。按递增顺序插入N个整数，并按同样顺序删除；(Binary sort tree establishment, insertions and deletions. Insert N integers in ascending order, press the same sequence deleted )

参加数学建模的同学很可能会遇到这套题。本程序采用链表进行编写，很方便地解决了小白鼠问题。(Mathematical modeling of the students participating are likely to encounter this question, the program uses the list to solve the problem of mice, very convenient.)

各种数据结构代码,欢迎下载,里面有JAVA,C,C++等等各种版本(Data structure and code, please download)

马踏棋盘的贪心算法，8*8棋盘，基本上不用回溯。(horse riding chessboard of the greedy algorithm, 8* 8 chessboard, basically not retroactive.)

数据结构基础内容，两栈共享空间，参考《大话数据结构》(Structural basis of data content, two stacks shared space, refer to Westward data structure )

floyd算法 数据结构 求最短路径(floyd algorithm for data structure for shortest path)

清华大学出版社，数据结构简明教程李春葆著，第四章源文件(Tsinghua University press, a brief course on data structure, Li Chunbao, fourth chapters)

数据结构简单的课程设计交通换乘算法,里面有零次换乘与一次换乘(Simple structure, curriculum design data traffic transfer algorithm, which have zero time transfer and a transfer)

选择型结构c语言编程 (Choose the type of structure of C language programming)