源代碼\用動態規劃算法計算序列關系個數 用關系"<"和"="將3個數a,b,c依次序排列時,有13種不同的序列關系: a=b=c,a=b<c,a<b=v,a<b<c,a<c<b a=c<b,b<a=c,b<a<c,b<c<a,b=c<a c<a=b,c<a<b,c<b<a 若要將n個數依序列,設計一個動態規劃算法,計算出有多少種不同的序列關系, 要求算法只占用O(n),只耗時O(n*n).
上傳時間: 2013-12-26
上傳用戶:siguazgb
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
電力系統在臺穩定計算式電力系統不正常運行方式的一種計算。它的任務是已知電力系統某一正常運行狀態和受到某種擾動,計算電力系統所有發電機能否同步運行 1運行說明: 請輸入初始功率S0,形如a+bi 請輸入無限大系統母線電壓V0 請輸入系統等值電抗矩陣B 矩陣B有以下元素組成的行矩陣 1正常運行時的系統直軸等值電抗Xd 2故障運行時的系統直軸等值電抗X d 3故障切除后的系統直軸等值電抗 請輸入慣性時間常數Tj 請輸入時段數N 請輸入哪個時段發生故障Ni 請輸入每時段間隔的時間dt
上傳時間: 2015-06-13
上傳用戶:it男一枚
本驅動程序在linux2.6.17中測試通過。yangxing msn:lelma_yx@hotmail.com 希望對SPI操作的朋友有所幫助。 一、工作方式: 從設備:SPI為MASTER模式 S3C2410:SPI為SLAVE模式+DMA 二、工作流程 1.S3C2410從接收:當從設備發送數據時,S3C2410利用DMA方式收數,收到指定長度的數據,則進入DMA中斷,將接收的數據拷出。 2.S3C2410從發送:當S3C2410需要發送,首先由RTS請求發送,然后等待從設備應答CTS,當從設備應答CTS時,進入外部中斷,啟動DMA發送,發送完成,再次進入從接收狀態。 三、文件位置 spi_dma_slave.c spi_dma_slave.h circular_buf.c circular_buf.h 等文件存放入driver/char/目錄 dma.c存放于arch/arm/mach-s3c2410/目錄 dma.h存放于include/arm-asm/mach-s3c2410/目錄 四、使用環境 1.arm-linux-gcc-3.4.1
標簽: SPI lelma_yx yangxing hotmail
上傳時間: 2015-08-11
上傳用戶:徐孺
上下文無關文法(Context-Free Grammar, CFG)是一個4元組G=(V, T, S, P),其中,V和T是不相交的有限集,S∈V,P是一組有限的產生式規則集,形如A→α,其中A∈V,且α∈(V∪T)*。V的元素稱為非終結符,T的元素稱為終結符,S是一個特殊的非終結符,稱為文法開始符。 設G=(V, T, S, P)是一個CFG,則G產生的語言是所有可由G產生的字符串組成的集合,即L(G)={x∈T* | Sx}。一個語言L是上下文無關語言(Context-Free Language, CFL),當且僅當存在一個CFG G,使得L=L(G)。 *⇒ 例如,設文法G:S→AB A→aA|a B→bB|b 則L(G)={a^nb^m | n,m>=1} 其中非終結符都是大寫字母,開始符都是S,終結符都是小寫字母。
標簽: Context-Free Grammar CFG
上傳時間: 2013-12-10
上傳用戶:gaojiao1999
VC 中音樂最完美的實現 想在程序中播放mp3,wma,wav等所有格式的音樂文件嗎?網上這樣的介紹真是少!!這是一個封裝了音樂的各種操作,比如音量調節,進度調節,的類。包 含兩個類,CMusic,CSound。分別在文件music.h,music.cpp,sound.h,sound.cpp。
上傳時間: 2014-08-12
上傳用戶:xiaohuanhuan
完成一個FIR數字濾波器的設計。要求: 1、 基于直接型和分布式兩種算法。 2、 輸入數據寬度為8位,輸出數據寬度為16位。 3、 濾波器的階數為16階,抽頭系數分別為h[0]=h[15]=0000,h[1]=h[14]=0065,h[2]=h[13]=018F,h[3]=h[12]=035A,h[4]=h[11]=0579,h[5]=h[10]=078E,h[6]=h[9]=0935,h[7]=h[8]=0A1F。
上傳時間: 2013-11-28
上傳用戶:duoshen1989
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
數據結構(嚴慰敏)配套純c代碼實驗十 typedef int InfoType // 定義其它數據項的類型 typedef int KeyType // 定義RedType類型的關鍵字為整型 struct RedType // 記錄類型(同c10-1.h) { KeyType key // 關鍵字項 InfoType otherinfo // 其它數據項 } typedef char KeysType // 定義關鍵字類型為字符型 #include"c1.h" #include"c10-3.h" void InitList(SLList &L,RedType D[],int n) { // 初始化靜態鏈表L(把數組D中的數據存于L中) char c[MAX_NUM_OF_KEY],c1[MAX_NUM_OF_KEY] int i,j,max=D[0].key //
標簽: typedef int InfoType KeyType
上傳時間: 2016-03-03
上傳用戶:2404