POJ 2752 C++ (KMP)

來源:互聯網
上載者:User

#include<iostream>
#include<string>
using namespace std;
int n,next[400008],result[400008];;
char s[400008],t[400008];
void Get_next()
{int j,k;
j=1;
k=0;
next[1]=0;
while(j<=n+1)
    { if(k==0 || s[j]==s[k])
      { j++;
       k++;
       next[j]=k;
       }
     else
       k=next[k];
     }
}
int main()
{ int i,k;
  freopen("in.txt","r",stdin);
  freopen("out.txt","w",stdout);
  while(scanf("%s",t)!=EOF)
     {n=strlen(t);
     for(i=1;i<=n;i++)
        s[i]=t[i-1];
      s[i]='#';
      Get_next();
      k=0;
      result[k++]=n+1;
      i=n+1;
      while(i!=1)
        { if(next[i]!=1)
           result[k++]=next[i];
         i=next[i];
         }
     for(i=k-1;i>0;i--)
       printf("%d ",result[i]-1);
     printf("%d\n",result[i]-1);
   }
  return 0;
}

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