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huffman_src22
本代码提供一种非常简单且快速的哈夫曼编码方法。
(this code provide a very simple and rapid method of Huffman coding.)
- 2007-06-15 16:02:25下载
- 积分:1
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migong---cPP
迷宫问题C++代码。。。解决迷宫问题。。。。(Maze C++ code. . . Solve maze problems. . . .)
- 2011-11-03 22:28:30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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NewCode
清(英文)常见数据结构,代码实现,值得下载,值得分享(Qing (English) common data structure, code implementation, worth downloading, worth sharing)
- 2012-11-21 14:33:49下载
- 积分:1
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heap
实现栈的基本操作,建栈,进栈,出栈,数据结构实现(To achieve the basic operation of the stack, built stack into the stack, the stack data structure)
- 2013-04-03 11:08:37下载
- 积分:1
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BinaryTree
二叉树实现,整个包为VS工程。包含了二叉树的基本功能(Binary Tree, the entire package is VS works. Contains the basic functions of the binary tree)
- 2012-12-28 10:40:23下载
- 积分:1
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radixsort
对首先产生20个随机数进行基数排序,是利用C++实现的(On the first 20 random numbers generated for the base sequencing is the use of C++ Realize the)
- 2007-10-16 19:11:53下载
- 积分:1
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function
提供字符串方法,大家面试可以用,包括找出对称字串(Some string function)
- 2011-05-14 23:14:49下载
- 积分:1
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xianxinglianbiao
c语言编写链式线性表的初始化,创建,插入删除等操作。(c language chained linear table is initialized, create, insert and delete operations.)
- 2013-11-09 14:30:30下载
- 积分:1
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chess
在N*N的棋盘上(1<=N<=10)填入1,2,...N*N共N*N个数,使得任意两个相邻的数之和为素数. (In the N* N chessboard (1 < = N < = 10) filled 1,2, ... N* N total number of N* N so that any two adjacent numbers and prime numbers.)
- 2009-06-01 11:21:39下载
- 积分:1