算法艺术与信息学竞赛完全指南

3星 · 超过75%的资源需积分: 2 162 浏览量更新于2024-10-31 收藏 911KB PDF 举报

"算法艺术与信息学竞赛题目完全解析"是一本专为大学生提供算法学习和信息学竞赛准备的详尽指南。这本书涵盖了算法基础、数据结构以及它们在实际问题中的应用，旨在帮助读者深入理解算法设计和分析的核心概念。书中首先强调了程序的本质——算法与数据结构的结合。在算法部分，作者详细介绍了各种基本算法类型，包括： 1. 枚举算法：通过列举所有可能的情况来解决问题，如Pku1116-----Library问题。 2. 贪心算法：采取局部最优策略来寻找全局最优解，如Pku1042--GoneFishing和Pku1700--CrossingRiver问题。 3. 递归与分治算法：通过将大问题分解为小问题来求解，如Pku1090-Chain和Pku2351--TimeZones问题。 4. 递推算法：利用先前计算的结果推导出新的结果，如Pku1090-Chain和Pku2351--TimeZones问题。接着，作者深入探讨了数据结构的重要性，从基础的栈、队列到更复杂的结构： 1. 栈和队列：它们是基础数据结构，用于处理数据的后进先出（LIFO）和先进先出（FIFO）原则，如Pku1363--Rails和Pku1879-TempusetmobiliusTimeandmotion问题。 2. 串：处理字符串问题的数据结构，如Pku1961-Period、Pku2406--PowerStrings和Pku2752--SeektheName,SeektheFame问题。 3. 树和二叉树：包括树的恢复、最近公共祖先等问题，如Pku2255--TreeRecovery、Pku1470--ClosestCommonAncestors、Pku1330--NearestCommonAncestors和Pku3264--BalancedLineup问题。 4. 图及其基本算法：图是表示复杂关系的重要工具，包括路径查找、最小生成树等，未具体给出题目但通常涵盖这些内容。 5. 排序与检索算法：如快速排序、二分查找等，如Pku1064--Cablemaster、Pku1723--SOLDIERS和Pku1433--Exchanges问题。在数据结构的拓宽与应用部分，作者讨论了： 1. 并查集：用于处理不相交集合的合并和查询，如Pku1703--Findthem,Catchthem、Pku1182--食物链、Pku1988--CubeStacking、Pku1733--Paritygame和Pku2492--ABug'sLife问题。 2. 堆及其变种：如优先队列的应用，如Pku2274--TheRace和Pku1197--DepotDescription问题。 3. 字典树：通过哈希表和二叉搜索树实现高效查找，如Pku2503--Babelfish问题，提供了字典树在文本处理中的应用。通过这些详细的题目解析，读者不仅可以学习到基础的算法和数据结构知识，还能了解到如何将这些知识应用于解决实际的信息学竞赛问题。这本书对于提高算法设计能力、培养问题解决技巧具有极大的价值，是准备信息学竞赛的宝贵资源。

算法艺术与信息学竞赛—完全导析 hi.baidu.com/ecbtnrt

else

{ strcpy(temp,BeforeResult[0]);

//记录下 BeforeResult[0],以便 s[n]To01=s[n-1]To00 用

plus(BeforeResult[1],change,AfterResult[0]);

strcpy(BeforeResult[0],AfterResult[0]);

strcpy(BeforeResult[1],temp);

}

for(j=0;j<MAXLEN;j++)

temp[j]='0';

plus(change,change,temp);

strcpy(change,temp);

}

i=0;

while(BeforeResult[0][i]=='0')

i++;//找到第一个不为 0 的位置

while(i<MAXLEN)

{ cout<<BeforeResult[0][i];i++;}

cout<<endl;

}

cin>>total;

}

return 0;

}

void plus(char * num1,char * num2,char * result)//实现 1+num1+num2

{

int i,x,y;

y=1;

for(i=MAXLEN-1;i>=0;i--)

{

x=num1[i]-'0'+num2[i]-'0'+y;

y=x/10;

x=x%10;

result[i]=x+'0';

}

Pku2351--Time Zones

Description

Prior to the late nineteenth century, time keeping was a purely local phenomenon.

Each town would set their clocks to noon when the sun reached its zenith each day. A

clockmaker or town clock would be the "official" time and the citizens would set their

写程序,做自己

算法艺术与信息学竞赛—完全导析 hi.baidu.com/ecbtnrt

pocket watches and clocks to the time of the town - enterprising citizens would offer

their services as mobile clock setters, carrying a watch with the accurate time to adjust

the clocks in customer's homes on a weekly basis. Travel between cities meant having

to change one's pocket watch upon arrival.

However, once railroads began to operate and move people rapidly across great

distances, time became much more critical. In the early years of the railroads, the

schedules were very confusing because each stop was based on a different local time.

The standardization of time was essential to efficient operation of railroads.

In 1878, Canadian Sir Sanford Fleming proposed the system of worldwide time zones

that we use today. He recommended that the world be divided into twenty-four time

zones, each spaced 15 degrees of longitude apart. Since the earth rotates once every

24 hours and there are 360 degrees of longitude, each hour the earth rotates

one-twenty-fourth of a circle or 15° of longitude. Sir Fleming's time zones were

heralded as a brilliant solution to a chaotic problem worldwide.

United States railroad companies began utilizing Fleming's standard time zones on

November 18, 1883. In 1884 an International Prime Meridian Conference was held in

Washington D.C. to standardize time and select the Prime Meridian. The conference

selected the longitude of Greenwich, England as zero degrees longitude and

established the 24 time zones based on the Prime Meridian. Although the time zones

had been established, not all countries switched immediately. Though most U.S. states

began to adhere to the Pacific, Mountain, Central, and Eastern time zones by 1895,

Congress didn't make the use of these time zones mandatory until the Standard Time

Act of 1918.

Today, many countries operate on variations of the time zones proposed by Sir

Fleming. All of China (which should span five time zones) uses a single time zone -

eight hours ahead of Coordinated Universal Time (known by the abbreviation UTC -

based on the time zone running through Greenwich at 0° longitude). Russia adheres to

its designated time zones although the entire country is on permanent Daylight Saving

Time and is an hour ahead of their actual zones. Australia uses three time zones - its

central time zone is a half-hour ahead of its designated time zone. Several countries in

the Middle East and South Asia also utilize half-hour time zones.

Since time zones are based on segments of longitude and lines of longitude narrow at

the poles, scientists working at the North and South Poles simply use UTC time.

Otherwise, Antarctica would be divided into 24 very thin time zones!

Time zones have recently been given standard capital-letter abbreviations as follows:

UTC Coordinated Universal Time

GMT Greenwich Mean Time, defined as UTC

BST British Summer Time, defined as UTC+1 hour

IST Irish Summer Time, defined as UTC+1 hour

WET Western Europe Time, defined as UTC

WEST Western Europe Summer Time, defined as UTC+1 hour

CET Central Europe Time, defined as UTC+1

CEST Central Europe Summer Time, defined as UTC+2

EET Eastern Europe Time, defined as UTC+2

写程序,做自己

剩余144页未读，继续阅读

SRXHC138

粉丝: 0
资源: 9

算法艺术与信息学竞赛完全指南

ACM编程--算法艺术与信息学竞赛题目完全解析

算法艺术与信息学竞赛题目全解析指南

算法艺术与信息学竞赛完全解答解析

算法艺术与信息学竞赛完全解析：算法+数据结构实战

算法艺术与信息学竞赛完全解析：从基础到应用

算法艺术与信息学竞赛深度解析

算法艺术与信息学竞赛习题解析

(源码)基于Spring Boot和JWT的饮品管理系统.zip

阿里巴巴发布的XQUIC库是QUIC和HTTP3协议的跨平台实现.zip

佳能打印机清零软件和教程

最新资源