KMP POJ3080 暴力KMP

POJ3080

Blue Jeans

Time Limit: 1000MS		Memory Limit: 65536K
Total Submissions: 20993		Accepted: 9294

Description

The Genographic Project is a research partnership between IBM and The National Geographic Society that is analyzing DNA from hundreds of thousands of contributors to map how the Earth was populated. 

As an IBM researcher, you have been tasked with writing a program that will find commonalities amongst given snippets of DNA that can be correlated with individual survey information to identify new genetic markers. 

A DNA base sequence is noted by listing the nitrogen bases in the order in which they are found in the molecule. There are four bases: adenine (A), thymine (T), guanine (G), and cytosine (C). A 6-base DNA sequence could be represented as TAGACC. 

Given a set of DNA base sequences, determine the longest series of bases that occurs in all of the sequences.

Input

Input to this problem will begin with a line containing a single integer n indicating the number of datasets. Each dataset consists of the following components:

• A single positive integer m (2 <= m <= 10) indicating the number of base sequences in this dataset.
• m lines each containing a single base sequence consisting of 60 bases.

Output

For each dataset in the input, output the longest base subsequence common to all of the given base sequences. If the longest common subsequence is less than three bases in length, display the string "no significant commonalities" instead. If multiple subsequences of the same longest length exist, output only the subsequence that comes first in alphabetical order.

Sample Input

3
2
GATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
3
GATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATACCAGATA
GATACTAGATACTAGATACTAGATACTAAAGGAAAGGGAAAAGGGGAAAAAGGGGGAAAA
GATACCAGATACCAGATACCAGATACCAAAGGAAAGGGAAAAGGGGAAAAAGGGGGAAAA
3
CATCATCATCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
ACATCATCATAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AACATCATCATTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT

Sample Output

no significant commonalities
AGATAC
CATCATCAT

 

题目大意：给m个长度为60的基因串，找最长公共子序列，在最长的情况下要满足字典序最小。

暴力真难想，暴力真是最难想的嘤嘤嘤：十分暴力地取出第一个字符串中的各个长度各位为起点的字符串（子序列），去匹配其他字符串，成功则更新，不成功继续遍历，每次记录最长的，字典序最小的。

注：1）如果某一子序列，在某一60长基因串中找不到，那么可以直接跳出遍历下一子序列

       2）如果某一长度的子序列没有任何一个能匹配成功，可以直接结束暴力

 

#include 
#include 

const int maxm=11;
const int maxc=66;

int m;
char dna[maxm][maxc],p[maxc],tem[maxc];
int Next[maxc];
int flag;

void get_Next(char* s,int* Next)
{
	int m=strlen(s);
	Next[0]=Next[1]=0;
	for(int i=1;i=3)
			printf("%s\n",tem);
		else
			printf("no significant commonalities\n");
	}

	return 0;
}