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Re:C++福利In Reply To:C++福利 Posted by:1908847416 at 2016-04-07 13:32:27 > #include<cstdio> > #include<cstdlib> > #include<cstring> > #include<iostream> > using namespace std; > > int n,la,lb; > int next[100010]; > char a[1000010],b[100010]; > > void getnext() > { > int j=-1; > next[0]=-1; > for(int i=1;i<lb;i++) > { > if(j!=-1 && b[j+1]!=b[i]) j=next[j]; > if(b[j+1]==b[i]) j++; > next[i]=j; > } > } > > int kmp() > { > int ans=0; > int j=-1; > for(int i=0;i<la;i++) > { > if(j!=-1 && a[i]!=b[j+1]) j=next[j]; > if(b[j+1]==a[i]) j++; > if(j==lb-1) > { > ans++; > j=next[j]; > } > } > return ans; > } > > int main() > { > scanf("%d",&n); > for(int u=1;u<=n;u++) > { > scanf("%s %s",b,a); > la=strlen(a); > lb=strlen(b); > getnext(); > printf("%d\n",kmp()); > } > } Followed by: Post your reply here: |
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