<BUG>public int size ( ) {int size = ( VAR_1 ) - ( first ) ;if ( size < 0 ) return size + ( VAR_2 . length ) ;else {return size ;}</BUG> }
public boolean isEmpty ( ) { return ( ( ( first ) == ( VAR_1 ) ) && ( ( VAR_2 [ first ] ) == null ) ) && ( ( VAR_2 [ VAR_1 ] ) == null ) ; } 
