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luowenfeng
建立试题库文件,随机产生n个题目;
题目涉及加减乘除,带括弧的混合运算;
利用栈求解表达式的值;
随时可以退出;
保留历史分数,能回顾历史,给出与历史分数比较后的评价(
The establishment of test database file, the subject of n randomly generated topics related to addition, subtraction, mixed operations with parentheses use the value of the expression stack solution ready to quit to preserve the historical scores, can look back at history, and history gives the comparison of scores Evaluation
保留历史分数,能回顾历史,给出与历史分数比较后的评价)
- 2020-12-29 23:09:01下载
- 积分:1
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InserSigList
单链表的插入。数据结构中的算法小程序。初学者很适用。(Single-linked list insertion. Data structure of algorithm applet. Beginners are applicable.)
- 2016-02-18 15:09:12下载
- 积分:1
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Bigint
利用双向链表实现对两大整数的相加运算。
可以修改数组长度实现更大整数的相加(Realize the use of two-way linked list of integers the sum of the two operations. Can modify the array length to achieve a greater sum of integers)
- 2007-10-18 21:34:06下载
- 积分:1
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list-and-array
数组的定义与使用,数组的运算,字符串的输入与输出,冒泡排序(list and array)
- 2013-10-17 11:32:30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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tree
C语言树的简单实现,介绍了树你前序遍历,树插入与删除节点的实现(C-tree is simple to achieve, before you introduced the tree traversal, tree insert and delete nodes to achieve)
- 2011-01-11 22:19:07下载
- 积分:1
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Hash
基于Hash表的程序同源性分析,可以利用本程序进行两个程序源码比较相似度(Homology analysis Hash Table-based program, you can use the program two program source code similarity)
- 2012-11-04 16:45:04下载
- 积分:1
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0908030206xin
一、 地理数据文件应用
对由点、线、面构成的地理数据文件进行打开、读取、关闭操作。
要求:
1、在C++环境下,通过程序设计实现文本格式数据文件的操作;
2、在打开数据文件后,生成点、线、面三个链表,分别用于记录三种类型的数据。
3、数据文件结构说明
(Geographic data file applications by point, line, surface consisting of geographic data file open, read, and close operations. Requirements: in C++ environment, through the program design text format data file operations 2, open the data file, generate points, lines, surfaces three linked list, respectively, for the record three types of data. 3, a data file structure)
- 2012-09-14 20:33:26下载
- 积分:1
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huffman
使用C语言完成党的霍夫曼编码,主要使用树的数据结构,作为巩固数据结构的练习(Using the C language to complete the party' s Huffman coding, the main use of the tree data structure, data structure as a consolidation exercise)
- 2013-07-15 23:59:47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