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sort
归并排序,复习排序算法,在不同环境下,寻找时间复杂度最少的排序算法(
Merge sort, review sorting algorithm, in different contexts, looking for the least time complexity of sorting algorithm)
- 2013-11-05 22:15:57下载
- 积分:1
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erchashu
二叉树的链式存储、先序中序遍历和层次遍历。(构造一棵树并输入数据,编写三个函数,非别是树的前序递归遍历算法、树的后序递归遍历算法、树的非递归中序遍历算法(这里的非递归以中序为例)。在主程序中调用这三个函数进行树的遍历,观察用不同的遍历方法输出的数据的顺序和验证递归与非递归输出的数据是否一样。)(Chain store binary tree, preorder traversal and hierarchy traversal.)
- 2013-12-07 23:16:06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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3_abstract_data_struct
数据结构:抽象数据类型的介绍;讲述如何构造函数和如何实现;(Data structure: the introduction of abstract data types on how to structure function and how to achieve )
- 2008-04-14 22:56:33下载
- 积分:1
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POJ2371
PKU ONLINEJUDGE 2371
- 2011-10-21 15:03:03下载
- 积分:1
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Mult
说明: 数据结构课上作业实现了一个多项式乘法的功能有注解(Job class data structure implements a polynomial function of multiplication comments)
- 2011-03-20 20:28:31下载
- 积分:1
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hannuota
分析汉诺塔,选择合适方法编程实现汉诺塔问题的解答。(Analysis of the Tower of Hanoi, select the appropriate method of programming the answers of the Tower of Hanoi problem.)
- 2012-05-22 18:48:33下载
- 积分:1
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nuaa1108
说明: nuaa1108 多少连续的1 解题报告(Problem solving report
)
- 2009-08-23 10:01:05下载
- 积分:1
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BDX
设计、编写和调试面向对象C++程序,实现任意两个同类数据比大小
的通用函数(模板),涵盖普通数值型数据之间的比较、两个字符串之间的比较
(按字典序)、两个复数之间的比较(按模大小)等,并通过主函数加以调用和
测试。(Design, writing and debugging of object-oriented C++ procedures to achieve similar data than the size of any two generic functions (template), covering general comparison between numerical data, the comparison between the two strings (lexicographically), two Comparison between complex numbers (modulo the size), and through the main function to be invoked and tested.)
- 2020-11-28 13:49:29下载
- 积分:1
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shizuo
用哈夫曼编码的方式进行图像的压缩,其中定义了一个cdib的类,通过之类来对图像进行处理(image coding in haffman)
- 2012-04-27 18:37:47下载
- 积分:1