在使用的时候加上这两行代码就行了
#include < vector> using namespace std;
C++ kmp算法模板参数说明
const T *source 待匹配的字符串
TL sourceLen 待匹配字符串的长度
const T *pattern 模式串
TL 模式串长度
C++ kmp算法模板代码示例:
template < class T,class TL> inline int kmpmatch(const T *source,TL sourceLen,const T *pattern,TL patternLen)
{ vector< int> next;
for ( int i = 0; i < patternLen ; i ++ ) next.push_back(0); next[0] = -1; for( int i = 1 ; i < patternLen ; i ++ )
{ int j = next[i - 1];
while ( (pattern[i] != pattern[i + 1])&& (j >= 0))
{ j = next[j]; }
if ( pattern[i] == pattern[j + 1])
{ next[i] = j + 1; }
else { next[i] = -1; } }
int i = 0; int j = 0;
while (( i < sourceLen ) && ( j < patternLen ))
{ if ( source[i] == pattern[j] )
{ i ++; j ++; } else if ( j == 0 )
{ i ++; } else { j = next[j - 1 ] + 1; } }
if ( j >= patternLen )
{ if ( !next.empty() )
next.clear();
return i - patternLen ;
}
else
{ if ( !next.empty() ) next.clear();
return -1; } }
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