poj 2406 求字符串中重复子串的个数

Sample Input

abcd
aaaa
ababab
.
Sample Output

1 //1个abcd
4 //4个a
3 //3个ab

#include<stdio.h>
#include<iostream>
#include<string.h>
#include<algorithm>
using namespace std;

const int MAXN=1000010;
char T[MAXN];
int next[MAXN];
int n;
void getNext()
{
    int j,k;
    j=0;
    k=-1;
    next[0]=-1;
    while(j < n)
    {
        if(k==-1||T[j]==T[k])
        {
            j++;
            k++;
           
            next[j]=k;
        }
        else k=next[k];
        
        
    }
    if(n%(n-k)==0)
        printf("%d
",n/(n-k));
    else
        printf("1
") ;
}
int main()
{
   
   
    while(scanf("%s",&T) != EOF)
    {    
        if (T[0]=='.')
           break ;
        n = strlen(T) ;
        getNext();
        
    }
    return 0;
}