IntegerSet a = new IntegerSet();
        for ( int i = 0; i <  rozmiar; i++  )
        {
            a.tablicab[ i ] = true;
        }
        IntegerSet a2 = new IntegerSet();
        for ( int i = 0; i <  rozmiar; i++  )
        {
            if(i%2==0) {
                a2.tablicab[i] = true;
            }
        }
        System.out.println( "a: " + a );
        System.out.println( "a2: " + a2 );
        System.out.println("Union: " + union( a, a2 ) );