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
标签： government streamline important alphabet
上传时间： 2015-06-09
上传用户：weixiao99
文件管理系统，主要有文档的类别设定、文档的上传、查询显示、用户管理等功能。
标签： 文件管理
上传时间： 2014-11-17
上传用户：refent
RTC8025时钟芯片驱动，可进行至阳历的下二位数和年月日星期时分秒为止的数据设定/计时/读取 阳历的下二位数为4 的倍数时可自动识别闰年且自动判别至2099 年
上传时间： 2015-09-25
上传用户：linlin
多项式乘法，完成完备的多项式乘法的功能，并且可以自适应新的参数设定
上传时间： 2015-10-01
上传用户：cc1
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.
标签： represented integers group items
上传时间： 2016-01-17
上传用户：jeffery
matlab PCA应用于TE数据进行检测 包括SPE统计量计算，以及SPE和T方控制限的计算。
上传时间： 2014-01-26
上传用户：jcljkh
对文件加解密，加密的时候设定密码，解密的时候要输入加密时的密码，根据密码解密。
标签： 文件加解密
上传时间： 2013-12-23
上传用户：lingzhichao
汉诺塔！！！ 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
标签： the animation Simulate movement
上传时间： 2017-02-11
上传用户：waizhang
在JAVA中，实现简单的FlowLayout布局窗口。及建大的JButton的位置设定例子
标签： JAVA
上传时间： 2013-12-21
上传用户：123啊
LDPC码既低密度奇偶校验码（Low Density Parity Check Code，LDPC），它由Robert G.Gallager博士于1963年提出的一类具有稀疏校验矩阵的线性分组码，不仅有逼近Shannon限的良好性能，而且译码复杂度较低, 结构灵活，是近年信道编码领域的研究热点，目前已广泛应用于深空通信、光纤通信、卫星数字视频和音频广播等领域。LDPC码已成为第四代通信系统(4G)
上传时间： 2013-12-24
上传用户：lunshaomo
