45 lines
1.1 KiB
OCaml
45 lines
1.1 KiB
OCaml
(** Get input *)
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let from input =
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let ic = open_in input in
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(* Read a file *)
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let rec read_line acc =
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try
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let line = input_line ic in
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read_line (line :: acc)
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with
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| End_of_file ->
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close_in ic;
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acc
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in
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(* Lis une ligne et la découpe proprement *)
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let scan line = String.split_on_char ' ' line in
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(* Convertis les string en nombre *)
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let convert l = List.map int_of_string l in
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let list = List.map scan (read_line []) in
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List.map convert list |> List.rev
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;;
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let first data =
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let rec is_safe_adj = function
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| x :: y :: tl -> if Int.abs (x - y) > 2 then true else is_safe_adj (y :: tl)
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| _ :: [] | [] -> false
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in
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let is_safe_order l =
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let sorted = List.fast_sort compare l in
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List.equal (fun a b -> a = b) l sorted
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|| List.equal (fun a b -> a = b) l (List.rev sorted)
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in
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let res = List.filter (fun x -> is_safe_order x && is_safe_adj x) data in
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List.length res
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;;
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let second data =
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(* todo *)
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0
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;;
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let _ =
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let data = from "input.txt" in
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print_endline ("first: " ^ Int.to_string (first data));
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print_endline ("second: " ^ Int.to_string (second data))
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;;
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