此文章同步发布在我的CSDN上:https://blog.csdn.net/weixin_44385565/article/details/90041078   1112 Stucked Keyboard (20 分)   On a broken keyboard, some of the keys are always stucked. So when you type some sentences, the characters corresponding to those keys wil…

https://pintia.cn/problem-sets/994805342720868352/problems/994805357933608960 On a broken keyboard, some of the keys are always stucked. So when you type some sentences, the characters corresponding to those keys will appear repeatedly on screen for …

题意: 输入一个正整数K(1<K<=100),接着输入一行字符串由小写字母,数字和下划线组成.如果一个字符它每次出现必定连续出现K个,它可能是坏键,找到坏键按照它们出现的顺序输出(相同坏键仅输出一次,数据保证必定存在坏键),接着输出将坏键修好后原本的字符串(K个连续坏键只输出一次). trick: 测试点1答案错误原因:出现次数为K的倍数而不是大于等于K 测试点2,3错误原因:输出原字符串时没有检验最后一段连续相同字符是否为坏键(循环当中没有检验这一段) AAAAAccepted code:…

题目链接:https://pintia.cn/problem-sets/994805342720868352/problems/994805357933608960 这道题初次写的时候,思路也就是考虑从头到尾遍历一遍,然后如果一个字符重复出现k的倍数次的话,那么这个键就是坏的. 但是这样做交了一发是错的. 后来一想,如果 k = 3,然后出现了aaaba这样一个字符串,那我们并不能仅仅凭a出现了3次就认为a是一个坏键,因为如果它是坏键,那么每一次它在字符串中出现的时候出现的次数都会是k的倍数.…

1035 Password (20 分) To prepare for PAT, the judge sometimes has to generate random passwords for the users. The problem is that there are always some confusing passwords since it is hard to distinguish 1 (one) from l (L in lowercase), or 0 (zero) fr…

1050 String Subtraction (20 分)   Given two strings S​1​​ and S​2​​, S=S​1​​−S​2​​ is defined to be the remaining string after taking all the characters in S​2​​ from S​1​​. Your task is simply to calculate S​1​​−S​2​​ for any given strings. However,…

1152 Google Recruitment (20分) In July 2004, Google posted on a giant billboard along Highway 101 in Silicon Valley (shown in the picture below) for recruitment. The content is super-simple, a URL consisting of the first 10-digit prime found in consec…

1073 Scientific Notation (20 分)   Scientific notation is the way that scientists easily handle very large numbers or very small numbers. The notation matches the regular expression [+-][1-9].[0-9]+E[+-][0-9]+ which means that the integer portion has…

1046 Shortest Distance (20 分)   The task is really simple: given N exits on a highway which forms a simple cycle, you are supposed to tell the shortest distance between any pair of exits. Input Specification: Each input file contains one test case. F…

1042 Shuffling Machine (20 分)   Shuffling is a procedure used to randomize a deck of playing cards. Because standard shuffling techniques are seen as weak, and in order to avoid "inside jobs" where employees collaborate with gamblers by performi…