Poj 2752
来源:互联网 发布:数据选择器 数据开关 编辑:程序博客网 时间:2024/05/17 23:40
Description
The little cat is so famous, that many couples tramp over hill and dale to Byteland, and asked the little cat to give names to their newly-born babies. They seek the name, and at the same time seek the fame. In order to escape from such boring job, the innovative little cat works out an easy but fantastic algorithm:
Step1. Connect the father's name and the mother's name, to a new string S.
Step2. Find a proper prefix-suffix string of S (which is not only the prefix, but also the suffix of S).
Example: Father='ala', Mother='la', we have S = 'ala'+'la' = 'alala'. Potential prefix-suffix strings of S are {'a', 'ala', 'alala'}. Given the string S, could you help the little cat to write a program to calculate the length of possible prefix-suffix strings of S? (He might thank you by giving your baby a name:)
Input
The input contains a number of test cases. Each test case occupies a single line that contains the string S described above.
Restrictions: Only lowercase letters may appear in the input. 1 <= Length of S <= 400000.
Output
For each test case, output a single line with integer numbers in increasing order, denoting the possible length of the new baby's name.
Sample Input
ababcababababcabab
aaaaa
Sample Output
2 4 9 18
The little cat is so famous, that many couples tramp over hill and dale to Byteland, and asked the little cat to give names to their newly-born babies. They seek the name, and at the same time seek the fame. In order to escape from such boring job, the innovative little cat works out an easy but fantastic algorithm:
Step1. Connect the father's name and the mother's name, to a new string S.
Step2. Find a proper prefix-suffix string of S (which is not only the prefix, but also the suffix of S).
Example: Father='ala', Mother='la', we have S = 'ala'+'la' = 'alala'. Potential prefix-suffix strings of S are {'a', 'ala', 'alala'}. Given the string S, could you help the little cat to write a program to calculate the length of possible prefix-suffix strings of S? (He might thank you by giving your baby a name:)
Input
The input contains a number of test cases. Each test case occupies a single line that contains the string S described above.
Restrictions: Only lowercase letters may appear in the input. 1 <= Length of S <= 400000.
Output
For each test case, output a single line with integer numbers in increasing order, denoting the possible length of the new baby's name.
Sample Input
ababcababababcabab
aaaaa
Sample Output
2 4 9 18
1 2 3 4 5
题意:问前后缀相同的字符个数。注意本身也算
解析:直接看next数组即可,找规律,注意下标
#include<cstdio>#include<cstring>#include<string>#include<algorithm>using namespace std;const int maxn=500000;int next[maxn];char str[maxn];void getNext(char *s,int *next){ next[0] = -1; int i,j;for (i=0,j=-1;s[i];){if (j==-1||s[i]==s[j]){i++; j++;next[i]=j;}else{j=next[j];}}}int main(){ while(scanf("%s",str)!=EOF&&str[0]) { memset(next,0,sizeof(next)); int len=strlen(str); getNext(str,next); int lens=1; int cn[maxn]; int cnt=0; for(int i=len;i>=0;) { if((next[i])!=-1&&next[i]) //printf("%d %d\n",i,next[i]); cn[cnt++]=next[i]; i=next[i]; } for(int i=cnt-1;i>=0;i--) printf("%d ",cn[i]); printf("%d\n",len); } return 0;}
0 0
- POJ 2752
- poj 2752
- poj 2752
- POJ 2752
- poj 2752
- POJ 2752
- poj(2752)
- POJ 2752
- poj 2752
- POJ 2752
- poj 2752
- POJ-2752
- POJ 2752
- POJ-2752
- poj 2752
- Poj 2752
- poj 2752
- POJ 2752
- HDU 4984 / BC 6D Goffi and Graph
- PAT1025 反转链表
- Spring-4:bean的自动装配及一些问题
- 关于虚函数
- python urllib2介绍
- Poj 2752
- HDU 1517 A Multiplication Game(博弈)
- 安卓开发之消息机制和AsyncTask实现的基本原理
- MPLS-5 MPLS-VPN
- ARC下需要注意的内存管理
- 学习网址记录
- 1097. Deduplication on a Linked List (25)(段错误)
- 设计模式---结构类型---装饰
- JAVA之旅(二十七)——字节流的缓冲区,拷贝mp3,自定义字节流缓冲区,读取键盘录入,转换流InputStreamReader,写入转换流,流操作的规律