北京大學(xué)ACM比賽題目 In 1742, Christian Goldbach, a German amateur mathematician, sent a letter to Leonhard Euler in which he made the following conjecture: Every even number greater than 4 can be written as the sum of two odd prime numbers. For example: 8 = 3 + 5. Both 3 and 5 are odd prime numbers. 20 = 3 + 17 = 7 + 13. 42 = 5 + 37 = 11 + 31 = 13 + 29 = 19 + 23. Today it is still unproven whether the conjecture is right. (Oh wait, I have the proof of course, but it is too long to write it on the margin of this page.) Anyway, your task is now to verify Goldbach s conjecture for all even numbers less than a million.
標(biāo)簽： mathematician Christian Goldbach Leonhard
上傳時間： 2016-04-22
上傳用戶：wangchong
北京大學(xué)ACM比賽題目 Consider an infinite full binary search tree (see the figure below), the numbers in the nodes are 1, 2, 3, .... In a subtree whose root node is X, we can get the minimum number in this subtree by repeating going down the left node until the last level, and we can also find the maximum number by going down the right node. Now you are given some queries as "What are the minimum and maximum numbers in the subtree whose root node is X?" Please try to find answers for there queries.
標(biāo)簽： the Consider infinite numbers
上傳時間： 2013-12-16
上傳用戶：日光微瀾
Microsoft .net IL 匯編語言程序設(shè)計指南. To tell the truth, I don t think I had much choice in this matter. Let me explain. With Microsoft .NET technology taking the world by storm, with more and more information professionals getting involved, large numbers of books covering various aspects of this technology have started to arrive—and none too soon. Alas, virtually all of these books are dedicated to .NET-based programming in high-level languages and rapid application development (RAD) environments. No doubt this is extremely important, and I am sure all these books will have to be reprinted to satisfy the demand. But what about the plumbing?
標(biāo)簽： Microsoft choice matter truth
上傳時間： 2014-11-06
上傳用戶：二驅(qū)蚊器
A technical trading system comprises a set of trading rules that can be used to generate trading signals. In general, a simple trading system has one or two parameters that determine the timing of trading signals. Each rule contained in a trading system is the results of parameterizations. (Source: The Profitability of Technical Analysis: A Review by Cheol-Ho Park and Scott H. Irwin)
標(biāo)簽： trading technical comprises generate
上傳時間： 2013-12-25
上傳用戶：tianyi223
無線傳感器網(wǎng)絡(luò)的主要功能是實(shí)現(xiàn)數(shù)據(jù)發(fā)布,在接收到信息查詢時能夠以有效的方式傳輸給查詢者.目前的數(shù)據(jù)發(fā)布方式通常基于洪泛機(jī)制查詢信息,浪費(fèi)了有限的能源.雖然一些最近的數(shù)據(jù)發(fā)布協(xié)議從不同程度上解決了這一問題,但不能保證查詢成功率.基于圓形節(jié)點(diǎn)分布網(wǎng)絡(luò)模型提出了一種既能減少能源消耗,又能提高成功率的數(shù)據(jù)發(fā)布模式——直徑-弦模式DCS(diameter-chord scheme).該模式利用了每個圓的弦都存在一個直徑與之垂直相交的性質(zhì).在此基礎(chǔ)上提出了Two-Phase協(xié)議.它在信息查詢時分成兩個工作方式不同的階段進(jìn)行,在第1段查詢不中時觸發(fā)第2段查找.為了減少Two-Phase的延遲,提出了基于優(yōu)先級和概率轉(zhuǎn)發(fā)兩種解決方法.理論分析和實(shí)驗(yàn)結(jié)果都表明,所提出的數(shù)據(jù)發(fā)布協(xié)議具有較好的性能.
標(biāo)簽： 數(shù)據(jù) 發(fā)布 方式 查詢
上傳時間： 2016-04-29
上傳用戶：李夢晗
Matrix Transposition and Multiplication It is a MIPS assembly program that does the following: given two matrices, M1 and M2, first transpose M2 to obtain M2tran. Then multiply M1 and M2tran.
標(biāo)簽： Multiplication Transposition following assembly
上傳時間： 2016-05-03
上傳用戶：kernaling
The Radio Interface Layer is the name for an interface that was developed especially for the Pocket PC Phone Edition. It is meant to abstract the interface with a phone/modem device. To achieve this it is closely modelled after the GSM AT command interface. Unfortunately the API was not published officially by Microsoft. Instead more high level API s were published that should be sufficient for developers. Again, unfortunately they are not sufficient. For example the API for receiving notification of incoming SMS messages is arranged for exclusively for one application per type of SMS. Apparently this will be improved upon in Pocket PC 2003. Another area is the availablity of a true AT command modem interface to interact with the GSM modem directly, which is also absent.
標(biāo)簽： especially Interface for developed
上傳時間： 2013-12-02
上傳用戶：wff
INTERFACES FOR DIGITAL COMPONENT VIDEO SIGNALS IN 525-LINE AND 625-LINE TELEVISION SYSTEMS OPERATING AT THE 4:2:2 LEVEL OF RECOMMENDATION ITU-R BT.601 (PART A)
標(biāo)簽： LINE INTERFACES TELEVISION COMPONENT
上傳時間： 2013-12-14
上傳用戶：xiaoxiang
pMatlab is a toolsbox from MIT for running matlab in parallel style on a multi-core PC or a cluster environment. These two documents summary the usage of pMatlab and running time measurements on three simple Monte Carlo simulation codes.
標(biāo)簽： multi-core toolsbox parallel pMatlab
上傳時間： 2014-12-05
上傳用戶：zhliu007
Tasks Read the textbook about the details of Vigenére Cipher. Implement the algorithm by C or C++. Requirements You do this lab in a group of two students. Your program should have input and output as follows: csci>a.out --> Please input the key: receptive --> Please input the plain text: wearediscoveredsaveyourself --> The cipher text is : nicvtwqngfzgvtwavzvcqyglmgj -->The original message is: wearediscoveredsaveyourself • You should test your program with several runs.
標(biāo)簽： the Implement algorithm textbook
上傳時間： 2013-12-21
上傳用戶：bruce5996
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