Power Strings POJ - 2406 时限: 3000MS   内存: 65536KB   64位IO格式: %I64d & %I64u 提交 状态 已开启划词翻译 问题描述 Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef".…

链接: http://poj.org/problem?id=2406 Power Strings Time Limit:3000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc&qu…

                                                                                                  Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 38038   Accepted: 15740 Description Given two strings a and b we define a*b t…

题目大意:叙述的比较高大上,其实就是一个字符串B = AAAAAAA,求出来这个A最短有多长   分析:注意如果这个串不是完全循环的,那么循环节就是就是它本身.   代码如下: #include<stdio.h> #include<string.h> ; ; char s[MAXN]; int next[MAXN]; void GetNext(int N) { , j=-; next[] = -; while(i < N) { || s[i]==s[j]) next[++i]…

Language: Default Power Strings Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 33205   Accepted: 13804 Description Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def"…

Given two strings a and b we define a*b to be their concatenation. For example, if a = "abc" and b = "def" then a*b = "abcdef". If we think of concatenation as multiplication, exponentiation by a non-negative integer is defin…

后缀数组专题的 emm.. 就next 循环节../ 有后缀数组也可以做 从小到大枚举长度i,如果长度i的子串刚好是重复了len/i次,应该满足len % i == 0和rank[0] - rank[i] == 1(整个串的等级比 i位置开始的后缀的等级大1  (i位置开始的后缀即为比总串低一个等级的后缀)) 和height[rank[0]] == len-i (整个串 和 比它低一个等级的串的最长公共前缀的长度 是总长度减去这个循环节的长度)这些条件的 #include <iostream>…

 字符串前缀的阶 题目大意:求前缀的阶 和POJ1961是一样的,KMP的Next数组的应用,不要用STL,不要一个一个读入字符(IO永远是最慢的) #include <iostream> #include <algorithm> #include <functional> #include <string.h> using namespace std; ]; ]; void Input(int &); void Get_Next(const int…

<题目链接> 题目大意: 给你一个字符串,要求将字符串的全部字符最少循环2次需要添加的字符数. [>>>kmp next函数 kmp的周期问题]  #include <cstdio> #include <cstring> + ; char s[maxn]; int Next[maxn]; void get_next() { , k = -; Next[] = -; while (s[j]) { || s[j] == s[k]) Next[++j] =…

两个整数做除法,有时会产生循环小数,其循环部分称为:循环节.比如,11/13=6=>0.846153846153.....  其循环节为[846153] 共有6位.下面的方法,可以求出循环节的长度. //n是被除数,m是除数 public static int f(int n, int m) { n = n % m; Vector v = new Vector(); for (;;) { v.add(n); n *= 10; n = n % m; if (n == 0) return 0; if…