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Simulation-of-dendritic-growth
模拟枝晶生长,在统计学常用的一种算法,对随机理论有帮助。(Simulation of dendritic growth, the statistics used an algorithm, the stochastic theory.)
- 2012-04-06 19:12:14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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PolynomialCoeff
NTL应用——大数系数多项式乘法的计算。从文件读如参数,计算多项式相乘后某项的系数(NTL application- the multiplication of big numbers coefficient polynomial )
- 2021-04-11 09:58:58下载
- 积分:1
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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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Binary-Tree-Sort
二叉树排序,二叉树的递归调用排序,属于C语言源码(Binary Tree Sort)
- 2011-09-01 10:14:24下载
- 积分:1
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houzixuandaiwang
猴子选大王是个重要问题猴子选大王是个重要问题猴子选大王是个重要问题(houzixuandawang)
- 2009-05-05 17:00:13下载
- 积分:1
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Ex3
c++实现的静态链表 可以从屏幕输入来构建静态链表 数据结构重要的部分(c++ implemented statically linked list can be input from the screen to the important part to build a static linked list data structure)
- 2012-11-27 15:19:25下载
- 积分:1
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traversinggraph
图的遍历的实现,文字界面,包含深度遍历和广度遍历两种情况~~(Graph traversal implementation, the text interface, including the depth and breadth traversal traverse both cases ~ ~)
- 2010-08-14 14:16:10下载
- 积分:1
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fibonacci-heap
斐波那契堆是一种具有较好平摊时间的堆数据结构。我使用C语言来实现斐波那契堆。(Fibonacci heap is a heap of time with good flat data structure. I am using C language to implement Fibonacci heap.)
- 2013-09-17 18:02:59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