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Huffman
数据结构，利用霍夫曼树实现文本数据的压缩。(Huffman data compression and decompression.)
- 2014-01-28 18:25:24下载
- 积分：1
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liu
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)
- 2017-04-07 10:58:37下载
- 积分：1
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Campus-navigation-system
校园导航系统包含佛山科技学院本部校区的校园景点平面图。通过系统的各功能不仅可以查询任意景点的编号，名称，简介等信息，还可以查询任意两景点间的最短路径及长度和所有路径及长度。另外，还可以通过一系列操作增加，更改或删除任意的景点的各信息。(Contains the campus attractions plan of the campus Foshan Institute of Technology campus navigation system. Through the function of the system not only can query any spots number, name, profile and other information, can also query the shortest path and arbitrary length between two spots and all paths and the length of. In addition, can also increase through a series of operations, the information change or delete any of the attractions.)
- 2015-05-09 16:19:30下载
- 积分：1
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tree
使用非递归的方法遍历二叉树，可以直接运行。(
Non-recursive binary tree traversal.)
- 2013-12-04 16:08:43下载
- 积分：1
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Is_BST
This is a C++ code. It finds out if the tree is a binary search tree (BST)or not, where the BST is one of data structures types.
- 2012-02-02 05:45:59下载
- 积分：1
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Fund6-StringViewer
字符串，实现了文件中查找想要的字符串，并将其标记出来
- 2010-12-26 20:51:45下载
- 积分：1
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FRFT-algorim
常在该网站下载资料，也想分享些材料上去，这个资料是FRFT算法(Often the site to download information, but also want to share some material up, this information is FRFT algorithm)
- 2020-07-04 13:00:02下载
- 积分：1
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SortDemo
实现排序操作SortDemoSortDemo.rar,很不错的vc源码，希望对大家有所帮助。(To achieve the sorting operation SortDemo SortDemo.rar, very good vc source, we want to help.)
- 2011-09-21 22:16:39下载
- 积分：1
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Ex1
从屏幕输入字符 判断括号匹配问题 数据结构作业(Judgment parenthesis matching data structure operations input characters from the screen)
- 2012-11-27 15:17:10下载
- 积分：1
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listnode
C++中，对链表的增删改查的基本使用，值得学习(C++, on the list of CRUD basic use, it is worth learning)
- 2015-08-05 17:57:12下载
- 积分：1
