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-(* Day 1: Part 1 *)
-
-let calculate_distance x y = Stdlib.abs (x - y)
-
-(** Require: left and right to be the same length *)
-let solve left right =
- let sorted_left = List.sort Stdlib.compare left in
- let sorted_right = List.sort Stdlib.compare right in
- let distances = List.map2 calculate_distance sorted_left sorted_right in
- List.fold_left ( + ) 0 distances
-
-let left line =
- let pos = 0 in
- let len = String.index line ' ' in
- String.sub line pos len
-
-let right line =
- let pos = String.rindex line ' ' + 1 in
- let len = String.length line - pos in
- String.sub line pos len
-
-let line_to_tuple line = (left line, right line)
-
-let lines_to_lists lines =
- let tuples = List.map line_to_tuple lines in
- let left =
- List.map
- (fun t ->
- let l, _ = t in
- int_of_string l)
- tuples
- in
- let right =
- List.map
- (fun t ->
- let _, r = t in
- int_of_string r)
- tuples
- in
- (left, right)