37 lines
914 B
OCaml
37 lines
914 B
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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(* Split column into couples *)
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let scan line = Scanf.sscanf line "%d %d" (fun x y -> x, y) in
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(* Split couple into 2 lists *)
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let split (acc1, acc2) (a, b) = a :: acc1, b :: acc2 in
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let zip = List.map scan (read_line []) in
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List.fold_left split ([], []) zip
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;;
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let first a b =
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let sorted_a, sorted_b = List.fast_sort compare a, List.fast_sort compare b in
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let m = List.map2 (fun a b -> Int.abs (a - b)) sorted_a sorted_b in
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List.fold_left ( + ) 0 m
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;;
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let second a b =
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(* todo *)
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0
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;;
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let _ =
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let a, b = from "input.txt" in
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print_endline ("first: " ^ Int.to_string (first a b));
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print_endline ("second: " ^ Int.to_string (second a b))
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;;
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