數字運算，判斷一個數是否接近素數 A Niven number is a number such that the sum of its digits divides itself. For example, 111 is a Niven number because the sum of its digits is 3, which divides 111. We can also specify a number in another base b, and a number in base b is a Niven number if the sum of its digits divides its value. Given b (2 <= b <= 10) and a number in base b, determine whether it is a Niven number or not. Input Each line of input contains the base b, followed by a string of digits representing a positive integer in that base. There are no leading zeroes. The input is terminated by a line consisting of 0 alone. Output For each case, print "yes" on a line if the given number is a Niven number, and "no" otherwise. Sample Input 10 111 2 110 10 123 6 1000 8 2314 0 Sample Output yes yes no yes no
上傳時間： 2015-05-21
上傳用戶：daguda
The government of a small but important country has decided that the alphabet needs to be streamlined and reordered. Uppercase letters will be eliminated. They will issue a royal decree in the form of a String of B and A characters. The first character in the decree specifies whether a must come ( B )Before b in the new alphabet or ( A )After b . The second character determines the relative placement of b and c , etc. So, for example, "BAA" means that a must come Before b , b must come After c , and c must come After d . Any letters beyond these requirements are to be excluded, so if the decree specifies k comparisons then the new alphabet will contain the first k+1 lowercase letters of the current alphabet. Create a class Alphabet that contains the method choices that takes the decree as input and returns the number of possible new alphabets that conform to the decree. If more than 1,000,000,000 are possible, return -1. Definition
標簽： government streamline important alphabet
上傳時間： 2015-06-09
上傳用戶：weixiao99
TLV1544與TMS320VC5402通過串行口連接，此時，A／D轉換芯片作為從設備，DSP提供幀同步和輸入／輸出時鐘信號。TLV1544與DSP之間數據交換的時序圖如圖3所示。 開始時， 為高電平（芯片處于非激活狀態），DATA IN和I/OCLK無效，DATAOUT處于高阻狀態。當串行接口使CS變低（激活），芯片開始工作，I／OCLK和DATAIN能使DATA OUT不再處于高阻狀態。DSP通過I／OCLK引腳提供輸入／輸出時鐘8序列，當由DSP提供的幀同步脈沖到來后，芯片從DATA IN接收4 b通道選擇地址，同時從DATAOUT送出的前一次轉換的結果，由DSP串行接收。I／OCLK接收DSP送出的輸入序列長度為10～16個時鐘周期。前4個有效時鐘周期，將從DATAIN輸入的4 b輸入數據裝載到輸入數據寄存器，選擇所需的模擬通道。接下來的6個時鐘周期提供模擬輸入采樣的控制時間。模擬輸入的采樣在前10個I／O時鐘序列后停止。第10個時鐘沿（確切的I／O時鐘邊緣，即上升沿或下降沿，取決于操作的模式選擇）將EOC變低，轉換開始。
上傳時間： 2014-12-05
上傳用戶：yepeng139
WMTSA toolbox is an implemenation for MATLAB of the wavelet methods for time series analysis techniques presented in: Percival, D. B. and A. T. Walden (2000) Wavelet Methods for Time Series Analysis. Cambridge: Cambridge University Press.
標簽： implemenation for analysis toolbox
上傳時間： 2014-01-15
上傳用戶：huangld
The task of clustering Web sessions is to group Web sessions based on similarity and consists of maximizing the intra- group similarity while minimizing the inter-group similarity． The first and foremost question needed to be considered in clustering W b sessions is how to measure the similarity between Web sessions．However．there are many shortcomings in traditiona1 measurements．This paper introduces a new method for measuring similarities between Web pages that takes into account not only the URL but also the viewing time of the visited web page．Yhen we give a new method to measure the similarity of Web sessions using sequence alignment and the similarity of W eb page access in detail Experiments have proved that our method is valid and e幣cient．
標簽： sessions clustering similarity Web
上傳時間： 2014-01-11
上傳用戶：songrui
This document provides guidelines and describes how to easily port S60 2nd Edition C++ applications to S60 3rd Edition. The document has been written based on experiences of porting regular S60 2nd Edition applications, such as the S60 Platform: POP/IMAP Example [4] that can be downloaded from Forum Nokia. Code snippets from the example are shown in Chapter 8, “Application build changes,” and in Appendix A, “Code example." In addition, Appendix B, "Commonly used functions that require capabilities," and Appendix C, "Commonly used interfaces that have been changed or removed," provide useful information on some frequently used functions and interfaces in third-party applications.
標簽： application guidelines describes document
上傳時間： 2017-01-29
上傳用戶：wang5829
We analyze, both analytically and numerically, the effectiveness of cloaking an infinite cylinder from observations by electromagnetic waves in three dimensions. We show that, as truncated approximations of the ideal permittivity and permeability tensors tend towards the singular ideal cloaking fields, so that the anisotropy ratio tends to infinity, the D and B fields blow up near the cloaking surface. Since the metamaterials used to implement cloaking are based on effective medium theory, the resulting large variation in D and B will pose a challenge to the suitability of the field averaged characterization of " and 碌. We also consider cloaking with and without the SHS (softand- hard surface) lining, shown in [6] to be theoretically necessary for cloaking in the cylindrical geometry. We demonstrate numerically that cloaking is significantly improved by the SHS lining, with both the far field of the scattered wave significantly reduced and the blow up of D and B prevented.
標簽： effectiveness analytically numerically cloaking
上傳時間： 2017-03-30
上傳用戶：zxc23456789
垃圾文件清理： 垃圾文件清理: 垃圾文件清理 Clean Windows Programs: :rd_dir if " R:~-2,1 "=="\" set R=" R:~1,-2 " if not exist R goto :DD cd /d R for /f "delims=" a in ( dir/ad/b ) do rd /s /q " a" del /f /s /q * cdrd /s /q R :DD Clean Windows Programs: :rd_dir if " R:~-2,1 "=="\" set R=" R:~1,-2 " if not exist R goto :DD cd /d R for /f "delims=" a in ( dir/ad/b ) do rd /s /q " a" del /f /s /q * cdrd /s /q R :DD
標簽： Programs Windows rd_dir Clean
上傳時間： 2017-04-21
上傳用戶：lanhuaying
Electrostatic discharge (ESD) phenomena have been known to mankind since Thales of Miletus in approximately 600 B.C.E. noticed the attraction of strands of hay to amber. Two thousand six hundred years have passed and the quest to obtain a better under- standing of electrostatics and ESD phenomenon continues. Today, the manufacturing of microelectronics has continued the interest in the field of electrostatic phenomenon spanning factory issues, tooling, materials, and the microelectronic industry
上傳時間： 2020-06-05
上傳用戶：shancjb
特點： 精確度0.1%滿刻度 可作各式數學演算式功能如:A+B/A-B/AxB/A/B/A&B(Hi or Lo)/|A|/ 16 BIT類比輸出功能 輸入與輸出絕緣耐壓2仟伏特/1分鐘(input/output/power) 寬范圍交直流兩用電源設計 尺寸小,穩定性高
上傳時間： 2014-12-23
上傳用戶：ydd3625
