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(* Zadanie 1 *)
let sublists l =
let rec backtrack sl = function
| [] -> [sl]
| hd :: tl -> (backtrack (sl @ [hd]) tl) @ backtrack sl tl
in backtrack [] l
(* Zadanie 2 *)
(* Znalezione tutaj: https://stackoverflow.com/questions/2710233/how-to-get-a-sub-list-from-a-list-in-ocaml *)
let rec super_sublist b e = function
| [] -> failwith "empty list"
| hd :: tl ->
let tail = if e <= 1 then [] else super_sublist (b - 1) (e - 1) tl in
if b > 0 then tail else hd :: tail
(* Moje rozwiązanie: *)
let rec sublist b e l =
let rec suffix idx l =
if idx = 0 then l else suffix (idx - 1) (List.tl l) in
let rec prefix idx l =
if idx = 0 then [] else (List.hd l) :: (prefix (idx - 1) (List.tl l)) in
prefix (e - 1) (suffix b l)
let cycle_with_sub sublist_fun xs n =
sublist_fun n (n + (List.length xs)) (xs @ xs)
let super_cycle = cycle_with_sub super_sublist
let cycle = cycle_with_sub sublist
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