Write a function to reverse the the elements of a list, with the following type:
val rev : 'a list -> 'a list = <fun>For example:
rev [1;2;3;4;5] ;;
- : int list = [5; 4; 3; 2; 1]Hint: recall the operator @ that concatenates two lists:
[1;2;3] @ [4;5]
- : int list = [1; 2; 3; 4; 5]