Clairewd’s message Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 2398    Accepted Submission(s): 942 Problem Description Clairewd is a member of FBI. After several years concealing in BUPT, s…

KMP算法的核心思想是next数组. 接下来,我来谈谈我对KMP数组的理解. KMP算法是用来匹配有多少相同字串的一种算法. 1.next数组记录前缀与后缀相等的位置,然后跳到这. 2.数组即记录后缀与前缀相等的个数 如ABCABC 那么next数组就是 0 1 2 3 4 5 6 -1 0 0 0 1 2 3 KMP算法核心 ]; void kmp(char x[],int m,int next_[]) { int i ,j; j = next_[] = -; i = ; while( i <…

(29/29) 3.23已完成  1.KMP int Next[maxn]; void prekmp(char* x,int len){ ,suf=; Next[]=-; while(suf<len){ &&x[suf]!=x[pre]) pre=Next[pre]; Next[++suf]=++pre; } } int kmp(char* x,char* y){ int lenx=strlen(x); int leny=strlen(y); ,suf=,ans=; prekmp(x…

题意:乱七八糟说了一大堆,就是先给你一个长度26的字符串,对应了abcd....xyz,这是一个密码表.然后给你一个字符串,这个字符串是不完整的(完整的应该是前半部分是加密的,后半部分是解密了的),然而,给你的字符串一定是加密的部分+一部分解密的部分(可以是全部,也可以是没有),让你求出最短的完整字符串: 解题思路:考虑给出的字符串加密部分一定全部给出,所以,给出的字符串的一半一定是加密的,所以把这一半先转换好,然后和后缀比一下,求最长的公共前缀,用kmp和拓展kmp都行: 拓展kmp(这里要注…

+]; int lenp,lens; +];//可以是char 也可以是string +]; void getnext() { nex[]=-; ,j=; ) { ||p[j]==p[k]) nex[++j]=++k; else k=nex[k]; } } int kmp() { //lens= //lenp= ; ; while(i<lens&&j<lenp) { ) { i++; j++; } else j=nex[j]; if(j==lenp) { ; } } ; } e…

Clairewd is a member of FBI. After several years concealing in BUPT, she intercepted some important messages and she was preparing for sending it to ykwd. They had agreed that each letter of these messages would be transfered to another one according…

Clairewd’s message Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3433    Accepted Submission(s): 1334 Problem Description Clairewd is a member of FBI. After several years concealing in BUPT, s…

After an uphill battle, General Li won a great victory. Now the head of state decide to reward him with honor and treasures for his great exploit. One of these treasures is a necklace made up of 26 different kinds of gemstones, and the length of the…

Problem Description Clairewd is a member of FBI. After several years concealing in BUPT, she intercepted some important messages and she was preparing for sending it to ykwd. They had agreed that each letter of these messages would be transfered to a…

Clairewd is a member of FBI. After several years concealing in BUPT, she intercepted some important messages and she was preparing for sending it to ykwd. They had agreed that each letter of these messages would be transfered to another one according…