(* Sample ML program - MinList *)
(* Takes a list of integers as input, 
and returns a list with at most one element, 
i.e. the smallest element in the list *)
fun MinList([]) = [] |
    MinList(x::xs) = 
         if null(xs) then [x] 
         else [Int.min(x,hd(MinList(xs)))];
MinList([]);
MinList([1,2]);
MinList([315, 41, 59, 265, 35, 897]);