2 files changed, 0 insertions, 71 deletions
diff --git a/aoc2023/src/day9/.gitignore b/aoc2023/src/day9/.gitignore
deleted file mode 100644
index ae40cea..0000000
--- a/aoc2023/src/day9/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-input.txt
-\ No newline at end of file
diff --git a/aoc2023/src/day9/solve.gleam b/aoc2023/src/day9/solve.gleam
deleted file mode 100644
index a2cc7ae..0000000
--- a/aoc2023/src/day9/solve.gleam
+++ /dev/null
@@ -1,70 +0,0 @@
-import adglent.{First, Second}
-import gleam/io
-import gleam/list
-import gleam/string
-import gleam/int
-
-fn parse(input: String, backwards backwards: Bool) -> List(List(Int)) {
-  use line <- list.map(string.split(input, "\n"))
-  use n_str <- list.map(maybe_backwards(string.split(line, " "), backwards))
-  let assert Ok(n) = int.parse(n_str)
-  n
-}
-
-fn maybe_backwards(xs: List(a), backwards: Bool) -> List(a) {
-  case backwards {
-    False -> list.reverse(xs)
-    True -> xs
-  }
-}
-
-fn is_constant(ns: List(Int)) -> Bool {
-  case list.unique(ns) {
-    [_] -> True
-    _ -> False
-  }
-}
-
-fn take_derivative(ns: List(Int)) -> List(Int) {
-  ns
-  |> list.window_by_2
-  |> list.map(fn(tup) { tup.0 - tup.1 })
-}
-
-fn extrapolate(ns: List(Int)) {
-  case is_constant(ns), ns {
-    True, [n, ..] -> n
-    False, [n, ..] -> n + extrapolate(take_derivative(ns))
-    _, _ -> panic as "list empty when it shouldn't be"
-  }
-}
-
-fn part(input: String, backwards backwards: Bool) {
-  input
-  |> parse(backwards: backwards)
-  |> list.fold(0, fn(acc, ns) { extrapolate(ns) + acc })
-  |> string.inspect
-}
-
-pub fn part1(input: String) {
-  part(input, backwards: False)
-}
-
-pub fn part2(input: String) {
-  part(input, backwards: True)
-}
-
-pub fn main() {
-  let assert Ok(part) = adglent.get_part()
-  let assert Ok(input) = adglent.get_input("9")
-  case part {
-    First ->
-      part1(input)
-      |> adglent.inspect
-      |> io.println
-    Second ->
-      part2(input)
-      |> adglent.inspect
-      |> io.println
-  }
-}