println(drop_odds(xs)) println(filter_nth(xs,3)) println(reverse_two_halves(xs)) }
Standard input is empty
List(2, 4, 6, 8, 10, 12, 14, 16, 18, 20) List(1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 20) List(11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)