public boolean contains(Node s){
  runTo(-1);
  if (null == m_map)   return false;
  for (int i=0; i < m_firstFree; i++) {
    Node node=m_map[i];
    if ((null != node) && node.equals(s))     return true;
  }
  return false;
}

public boolean contains ( Node s ) { runTo ( - 1 ) ; if ( null == m_map ) return false ; for ( int i = 0 ; i < m_firstFree ; i ++ ) { Node node = m_map [ i ] ; if ( ( null != node ) && node . equals ( s ) ) return true ; } return false ; }
tell if the table contains the given node .
