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RSA算法 :首先, 找出三個數, p, q, r, 其中 p, q 是兩個相異的質數, r 是與 (p-1)(q-1) 互質的數...... p, q, r 這三個數便是 person_key，接著, 找出 m, 使得 r^m == 1 mod (p-1)(q-1)..... 這個 m 一定存在, 因為 r 與 (p-1)(q-1) 互質, 用輾轉相除法就可以得到了..... 再來, 計算 n = pq....... m, n 這兩個數便是 public_key ，編碼過程是, 若資料為 a, 將其看成是一個大整數, 假設 a < n.... 如果 a >= n 的話, 就將 a 表成 s 進位 (s
標簽： person_key RSA 算法
上傳時間： 2013-12-14
上傳用戶：zhuyibin
BP神經網絡，用vb寫的，包含傳統BP網絡S型函數和傳統BP網絡ATN型函數
標簽： BP神經網絡
上傳時間： 2014-08-14
上傳用戶：咔樂塢
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
隨著人們的生活水平的日益提高，洗衣機的使用也越來越普及，目前全國的洗衣機的年產量已超過1000萬臺。洗衣機的分類較多，根據不同的角度大致可分如下幾類： 洗衣機從不同洗衣的原理來說可分為波輪洗衣機、滾筒洗衣機、以及攪拌式洗衣機。 洗衣機從結構上又可分為：單缸和雙缸洗衣機； 洗衣機從水流方式上又可分為：瀑布水流、手搓水流、懸浮水流等； 洗衣機從電機的驅動方式上又可分為：間接驅動和直接驅動（DD型洗衣機）； 從洗衣機的電機的驅動電源的不同可分為：普通洗衣機和變頻洗衣機，其中變頻洗衣機又可分為：直流變頻洗衣機和交流變頻洗衣機； 從洗衣機的顯示方式來分有：LED燈顯示、數碼管顯示、LCD顯示、以及VFD顯示。 目前在國內波輪洗衣機占洗衣機用量的大部分，滾筒洗衣機和攪拌式洗衣機在國內很少，主要在歐美的家庭大量使用。但近幾年滾筒洗衣機洗衣機在國內的市場呈快速增長。
標簽： 水平
上傳時間： 2014-01-16
上傳用戶：banyou
留言格式新穎。界面美觀，典雅。查看qq,icq資料。設置面板可設置參數。按月份銷毀留言。斑竹回復且送信給作者。留言和回復可以選擇肖像，也可以自填。
標簽：
上傳時間： 2014-01-12
上傳用戶：waizhang
本書由知名的C++專家Matthew H．Austern執筆，引導你進入泛型編程思維模型，并將你帶往此一模型的最重要成品：C++ Standard Template Library(STL)。本書揭示STL的奧秘，告訴你STL不僅僅是一組方便運用的容器類(container classes)。對于泛型組件和可交互作用的組件而言，STL是一個具備擴充能力的框架(framework)、 《泛型編程與STL》闡述了泛型編程的中心思想：concepts、modeling、refinement，并為你展示這些思想如何導出STL的基礎概念：iterators、containers、function objects。循此路線，你可以把STL想像為一個由concepts(而非明確之functions或classes)組成的程序庫：、你將學習其正式結構并因此獲得其潛在威力所帶來的完整優勢。本書使你能夠： ●以你自己的“可移植組件”及“可交互作用之泛型組件”擴充STL； ●產生一些算法，讓它們和它們所處理之型別(types)及數據結構徹底劃清界線； ●撰寫更精致、更高效、更有效力的代碼，可跨平臺重復使用。
上傳時間： 2014-01-06
上傳用戶：Avoid98
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
標簽： represented integers group items
上傳時間： 2016-01-17
上傳用戶：jeffery
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
標簽： converts Toolbox complex logical
上傳時間： 2016-02-12
上傳用戶：a673761058
漢諾塔！！！ Simulate the movement of the Towers of Hanoi puzzle Bonus is possible for using animation eg. if n = 2 A→B A→C B→C if n = 3 A→C A→B C→B A→C B→A B→C A→C
標簽： the animation Simulate movement
上傳時間： 2017-02-11
上傳用戶：waizhang
