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數據結構系列均是本人個(gè)人搜集和寫(xiě)出來(lái)的，若有錯誤請大家批評指正。（有的是c++，有的是偽代碼）

1. String

class String

{

public:

       String( const char * str = NULL );

       String( const String & other);

       ~String();

       String & operator=( const String & other);

private:

       char * m_p;

};

String::String( const char * str )

{

       if ( NULL == str )

       {

              m_p = new char[1];

              if ( NULL != m_p )

              {

                     *m_p = '\0';

              }

       }

       else

       {

              m_p = new char[strlen(str)+1];

              if ( NULL != m_p )

              {

                     strcpy( m_p, str );

              }

       }

}

String::String( const String & other )

{

       m_p = new char[strlen(other.m_p)+1];

       if ( NULL != m_p )

       {

              strcpy( m_p, other.m_p );

       }

}

String & String::operator=( const String & other )

{

       if ( this != &other )

       {

              delete [] m_p;

              m_p = new char[strlen(other.m_p)+1];

              if ( NULL != m_p )

              {

                     strcpy( m_p, other.m_p );

              }

       }

       return *this;

}

String::~String()

{

       delete [] m_p;

}