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author | Hunky Jimpjorps <thechairman@thechairman.info> | 2024-02-02 17:05:12 -0500 |
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committer | Hunky Jimpjorps <thechairman@thechairman.info> | 2024-02-02 17:05:12 -0500 |
commit | 48e35ad3b0b0c62f936784e4aca70b17c3b0e3f9 (patch) | |
tree | f59a13e0b5e80ab925220b4488c6e36b1bec660a /aoc2023/src/day13/solve.gleam | |
parent | 87e9ab25ff70e215b537939a4bc23ab101f41dbe (diff) | |
download | gleam_aoc-48e35ad3b0b0c62f936784e4aca70b17c3b0e3f9.tar.gz gleam_aoc-48e35ad3b0b0c62f936784e4aca70b17c3b0e3f9.zip |
renaming
Diffstat (limited to 'aoc2023/src/day13/solve.gleam')
-rw-r--r-- | aoc2023/src/day13/solve.gleam | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/aoc2023/src/day13/solve.gleam b/aoc2023/src/day13/solve.gleam deleted file mode 100644 index 2b3fca2..0000000 --- a/aoc2023/src/day13/solve.gleam +++ /dev/null @@ -1,86 +0,0 @@ -import adglent.{First, Second} -import gleam/io -import gleam/list -import gleam/string -import gleam/bool - -type SymmetryType { - Horizontal(Int) - Vertical(Int) -} - -fn is_symmetric(xss: List(List(a)), errs: Int) { - let assert [left, ..right] = xss - do_is_symmetric([left], right, errs) -} - -fn do_is_symmetric( - left: List(List(a)), - right: List(List(a)), - errors: Int, -) -> Result(Int, Nil) { - use <- bool.guard(list.is_empty(right), Error(Nil)) - let assert [h, ..t] = right - let found_errors = - list.zip(list.flatten(left), list.flatten(right)) - |> list.filter(fn(tup) { tup.1 != tup.0 }) - |> list.length - case found_errors == errors { - True -> Ok(list.length(left)) - False -> do_is_symmetric([h, ..left], t, errors) - } -} - -fn get_symmetry_type(xss: List(List(String)), errors: Int) { - case is_symmetric(xss, errors) { - Ok(n) -> Horizontal(n) - _ -> { - let assert Ok(n) = is_symmetric(list.transpose(xss), errors) - Vertical(n) - } - } -} - -fn summarize_notes(symmetries: List(SymmetryType)) { - use acc, note <- list.fold(symmetries, 0) - case note { - Horizontal(n) -> 100 * n - Vertical(n) -> n - } + acc -} - -fn solve(input: String, errors: Int) { - input - |> string.split("\n\n") - |> list.map(fn(strs) { - strs - |> string.split("\n") - |> list.map(string.to_graphemes) - |> get_symmetry_type(errors) - }) - |> summarize_notes - |> string.inspect -} - -pub fn part1(input: String) { - solve(input, 0) -} - -pub fn part2(input: String) { - solve(input, 1) -} - -pub fn main() { - let assert Ok(part) = adglent.get_part() - let assert Ok(input) = adglent.get_input("13") - case part { - First -> - part1(input) - |> adglent.inspect - |> io.println - Second -> - part2(input) - |> adglent.inspect - |> io.println - } -} |