題目：利用條件運算符的嵌套來完成此題：學習成績>=90分的同學用A表示，60-89分之間的用B表示，60分以下的用C表示。 1.程序分析：(a>b)?a:b這是條件運算符的基本例子。
上傳時間： 2015-01-08
上傳用戶：lifangyuan12
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
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
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
獲取計算機IP地址等網絡參數 UDP聊天程序 TCP聊天程序 瀏覽器的實現
標簽： 獲取計算機的名稱和IP地址 基本C/S模式的通信實驗
上傳時間： 2015-04-12
上傳用戶：scnbyh
NFS服務器實現文件共享
上傳時間： 2015-05-13
上傳用戶：yangkang1192
Use fft to analyse signal by plotting the original signal and its spectrum.
標簽： matlab fft
上傳時間： 2015-11-23
上傳用戶：石灰巖123
一、地址映射與數據傳輸 二、PCI9054的基本知識 三、PCI9054的寄存器之間的關系
標簽： PCI 總線學習筆記
上傳時間： 2016-02-15
上傳用戶：4722656
實驗十 子程序結構設計實驗
上傳時間： 2016-05-11
上傳用戶：txzdll
摘要：本文在無線信道的理論基礎上，分析了Suzuki信道模型的結構原理，介紹了利用正弦波疊加法構成高斯序列，從而建立Suzuki信道數學模型的方法，并通過Matlab軟件對其進行了仿真。仿真結果驗證了Suzuki模型同時符合大尺度衰落和小尺度衰落的特點，且可以驗證Suzuki信道模型能夠仿真平坦衰落信道
上傳時間： 2016-05-15
上傳用戶：嘻嘻嘻嘻
