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| #include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 101
void get_next( int *next,char *a,int la)
{
int i=1,j=0 ;
next[1] = 0 ;
while ( i <= la)
{
if( a[i] == a[j] || j == 0 )
{
j ++ ;
i ++ ;
if( a[i] == a[j])
next[i] = next[j];
else
next[i] = j ;
}
else
j = next[j] ;
}
}
int str_kmp( int *next, char *A ,char *a, int lA,int la)
{
int i,j,k ;
i = 1 ;
j = 1 ;
while ( i<=lA && j <= la )
{
if(A[i] == a[j] || j == 0 )
{
i ++ ;
j ++ ;
}
else
j = next[j] ;
}
if ( j> la)
return i-j+1 ;
else
return -1 ;
}
int main(void)
{
int n,k;
int next[MAX]={0} ;
int lA=0,la =0 ;
char A[MAX],a[MAX] ;
scanf("%s %s",A,a) ;
lA = strlen(A);
la = strlen(a);
for(k=la-1; k>= 0 ;k --)
a[k+1] = a[k] ;
for(k=lA-1; k>= 0 ;k --)
A[k+1] = A[k] ;
get_next(next,a,la) ;
k = str_kmp(next,A,a,lA,la);
if ( -1 == k)
printf("Not Soulation!!! ");
else
printf("%d ",k) ;
system("pause");
return 0 ;
}
|