Setup Scala

ocaml/lib/problems/problem_2023_02.ml

@@ -0,0 +1,46 @@
+let year = 2023
+let day = 1
+
+module Part_1 = struct
+  type color = Red | Blue | Green
+  type set = { count : int; color : color }
+  type game = { number : int; sets : set list }
+
+  let print_game { number ; _ } =
+    Printf.sprintf "%i" number
+
+  let run (input : string) : (string, string) result =
+    let parse_color = function
+      | "red" -> Red
+      | "blue" -> Blue
+      | "green" -> Green
+      | _ -> assert false
+    in
+    let parse_set str =
+      match String.split_on_char ',' str with
+      | [ number; color ] ->
+          { count = int_of_string number; color = parse_color color }
+      | _ -> assert false
+    in
+    let parse_sets str = String.split_on_char ';' str |> List.map parse_set in
+    let parse_game_number str =
+      match String.trim str |> String.split_on_char ' ' with
+      | [ _; number ] -> int_of_string number
+      | _ -> assert false
+    in
+    let parse_line str =
+      match String.split_on_char ':' str with
+      | [ prefix; suffix ] ->
+          { number = parse_game_number prefix; sets = parse_sets suffix }
+      | _ -> assert false
+    in
+    let (games : game list) =
+      input |> String.trim |> String.split_on_char '\n' |> List.map parse_line
+    in
+    Ok (List.hd games |> print_game)
+end
+
+module Part_2 = struct
+  let run (input : string) : (string, string) result =
+    Ok input
+end