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#include<cstdio> #include<algorithm> #include<cmath> #include<string> #include<cstring> //#include<bits/stdc++.h> using namespace std; template<class T>inline T read(T&x) { char c; while((c=getchar())<=32)if(c==EOF)return 0; bool ok=false; if(c=='-')ok=true,c=getchar(); for(x=0; c>32; c=getchar()) x=x*10+c-'0'; if(ok)x=-x; return 1; } template<class T> inline T read_(T&x,T&y) { return read(x)&&read(y); } template<class T> inline T read__(T&x,T&y,T&z) { return read(x)&&read(y)&&read(z); } template<class T> inline void write(T x) { if(x<0)putchar('-'),x=-x; if(x<10)putchar(x+'0'); else write(x/10),putchar(x%10+'0'); } template<class T>inline void writeln(T x) { write(x); putchar('\n'); } //-------ZCC IO template------ const int maxn=1000001; const double inf=999999999; #define lson (rt<<1),L,M #define rson (rt<<1|1),M+1,R #define M ((L+R)>>1) #define For(i,t,n) for(int i=(t);i<(n);i++) typedef long long LL; typedef double DB; typedef pair<int,int> P; #define bug printf("---\n"); #define mod 1000000007 int next[maxn]; char a[maxn],b[maxn]; void getnext(char*s) { int i=0,j=-1; next[0]=-1; int len=strlen(s); while(i<len) { if(j==-1||s[i]==s[j]) next[++i]=++j; else j=next[j]; } } int kmp(char*p,char*s) { int i=0,j=0,ans=0; int n=strlen(p); int m=strlen(s); while(i<n&&j<m) { if(j==-1||p[i]==s[j]) i++,j++; else j=next[j]; if(j==m) { ans++; j=0;//j=0 表示无重叠的子串 //j=next[j];//更新下次的匹配位置,表示有重叠的子串 } } return ans; } int main() { //#ifndef ONLINE_JUDGE //freopen("in.txt","r",stdin); //freopen("zccccc.txt","w",stdout); //#endif // ONLINE_JUDGE int n,m,i,j,t,k; int T; while(~scanf("%s",a)&&a[0]!='#') { scanf("%s",b); getnext(b); writeln(kmp(a,b)); } return 0; }
C - 剪花布条 HDU2087( kmp找子串,子串不能有重叠 )
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原文地址:http://blog.csdn.net/u013167299/article/details/45080089