public int addUniqueElement ( int element , int treap ) { int treap_ ; if ( treap == - 1 ) { if ( m_defaultTreap == nullNode ( ) ) m_defaultTreap = createTreap ( - 1 ) ; treap_ = m_defaultTreap ; } else { treap_ = treap ; } return addElement_ ( element , 1 , treap_ ) ; }
the already existing element equal to element .