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chazhao
数据结构课程作业，查找算法。用哈希算法下实行查找(Data structure course work, search algorithm. Under the hash algorithm used to find)
- 2009-07-08 02:41:51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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complex
.h文件。c++中的复数类，能够直接完成基本四则运算，输入输出流，完成一定范围内的比较运算(. H file. c++ classes in the plural, to directly perform basic arithmetic, input and output streams, to complete a range of comparison operators)
- 2021-04-25 14:58:46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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BiTree
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 )
- 2020-09-05 16:38:05下载
- 积分：1
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hill-climbing
改进爬山算法，用于风力发电机实现风能最大追踪，找到最佳叶尖速比，实现最大功率(modified hill-climbing algorithm for wind turbine with MPPT)
- 2017-02-26 12:21:08下载
- 积分：1
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017
广度优先搜索及深度优先搜索，用C语言实现，比较使用(Breadth-first search and depth first search, using C language, compared with)
- 2011-07-09 15:27:40下载
- 积分：1
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hafumanTree
数据结构课程设计，在VC环境下完成，利用哈夫曼树原理，主要功能是实现字符的压缩和解压缩，设计脉络清晰，易懂(Data structure course design, completed in the VC environment, using Huffman tree principle, the main function is to achieve the character of the compression and decompression, design, clear structure, easy to understand)
- 2011-01-02 13:15:23下载
- 积分：1
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1013_digital_root
数字根算法，用最简单的代码计算数字根。如果把一个大数的各位数字相加得到一个和，再把这个和的各位数字相加又得一个和，再继续作数字和，直到最后的数字和是个位数为止，这最后的数称为最初那个数的“数字根”。(Digital root algorithm, with the most simple code to calculate the digital root. If you figure in a large numbers is the sum of a, then this and you figure the sum is again a, and then continue for digital and until the final figure and the single digits, the last number called initially that the number of "digital root".)
- 2012-04-27 10:07:18下载
- 积分：1
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b
说明： 定义一个类SortArray继承自MyArray，在该类中定义函数sort实现排序功能。
定义一个类ReArray继承自MyArray，在该类中定义函数reverse实现逆转功能。
定义一个类AverArray继承自MyArray，在该类中定义函数Aver实现求解整数的平均值。
定义NewArray类，同时继承了SortArray、ReArray和AverArray，使得NewArray类的对象同时具有排序、逆转和求平均值的功能。在继承的过程中声明为虚基类，体会虚基类在解决二义性问题中的作用。
(Define a class SortArray inherited from MyArray, defined in the class sorting function sort implementation. Define a class ReArray inherited from MyArray, define the function in reverse to achieve such reversal function. Define a class AverArray inherited from MyArray, defined in the class to solve integer function Aver achieve the average. Defined NewArray class, and inherits SortArray, ReArray and AverArray, making the object of both NewArray class sorting, reversing, and the mean value of the function. In the process of succession declared as virtual base classes, virtual base class experience in resolving ambiguities of the role.)
- 2010-06-02 02:13:03下载
- 积分：1
