-module(practice).
-export([product/1, max_of_list/1]).

% Return the product of the elements of the list
product(X) -> product(X, 1).
product([], Acc) -> Acc;
product([X|Xs], Acc) -> product(Xs, X*Acc).

% Return the max of the list
max_of_list([X|Xs]) -> max_of_list(Xs, X).
max_of_list([X], Max) -> erlang:max(X, Max);
max_of_list([X|Xs], Max) -> max_of_list(Xs, erlang:max(X, Max)).