63 lines
1.8 KiB
OCaml
63 lines
1.8 KiB
OCaml
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type choice
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= Rock
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| Paper
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| Scissors
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let int_of_choice = function
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| Rock -> 1
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| Paper -> 2
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| Scissors -> 3
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let choice_of_string = function
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| "A" | "X" -> Rock
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| "B" | "Y" -> Paper
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| "C" | "Z" -> Scissors
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| _ -> failwith "invalid choice" ;;
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type outcome
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= Draw
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| Win
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| Lose
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let int_of_outcome = function
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| Lose -> 0
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| Draw -> 3
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| Win -> 6
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let outcome_of_string = function
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| "X" -> Lose
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| "Y" -> Draw
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| "Z" -> Win
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| _ -> failwith "invalid choice"
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let choice_of_outcome oponent = function
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| Win -> if oponent = Rock then Paper else if oponent = Paper then Scissors else Rock
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| Lose -> if oponent = Rock then Scissors else if oponent = Paper then Rock else Paper
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| Draw -> if oponent = Rock then Rock else if oponent = Paper then Paper else Scissors
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let outcome me oponent =
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match int_of_choice me - int_of_choice oponent with
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| -1 | 2 -> Lose
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| 1 | -2 -> Win
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| _ -> Draw
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let solve f l = l
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|> List.map (fun line -> line
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|> String.split_on_char ' '
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|> (fun l -> (List.hd l, List.tl l |> List.hd))
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|> f
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|> (fun (oponent, me) -> ((outcome me oponent) |> int_of_outcome) + int_of_choice me))
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|> List.fold_left (+) 0
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let d2_1 = solve (fun (oponent_s, me_s) ->
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(choice_of_string oponent_s, choice_of_string me_s))
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let d2_2 = solve (fun (oponent_s, outcome_s) ->
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(choice_of_string oponent_s, outcome_of_string outcome_s)
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|> (fun (oponent, outcome) -> (oponent, (choice_of_outcome oponent outcome))))
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open Utils
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let _ = "\n1: " ^ (string_of_int (read_file "bin/d2/input.txt" |> d2_1)) ^
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"\n2: " ^ (string_of_int (read_file "bin/d2/input.txt" |> d2_2)) |> print_endline
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