advent of code 2024 day 02 solution

README.md

@@ -29,6 +29,15 @@ Run all tests:
     <th>Status</th>
   </tr>
 
+  <tr>
+   <td><a href="https://adventofcode.com/2024/day/2">2024</a></td>
+   <td><a href='https://github.com/wasi0013/advent_of_code/blob/master/lib/y2024/day_02.ex'> 2</a></td>
+   <td> :green_circle: :green_circle: </td>
+
+
+
+   </tr>
+
   <tr>
    <td><a href="https://adventofcode.com/2024/day/1">2024</a></td>
    <td><a href='https://github.com/wasi0013/advent_of_code/blob/master/lib/y2024/day_01.ex'> 1</a></td>

lib/y2024/day_02.ex

@@ -0,0 +1,35 @@
+defmodule Aoc.Y2024.Day02 do
+  @moduledoc """
+  Solved https://adventofcode.com/2024/day/2
+  """
+  import Aoc.Helper.IO
+
+  def solve_part1(data), do: data |> Enum.map(&process/1) |> Enum.sum()
+  def solve_part2(data), do: data |> Enum.map(&dampen/1) |> Enum.sum()
+
+  def process([], _prev, _flag, result), do: result
+
+  def process([h | list], prev, true, result) when h + 1 == prev or h + 2 == prev or h + 3 == prev,
+    do: process(list, h, true, result)
+
+  def process([h | list], prev, false, result) when h - 1 == prev or h - 2 == prev or h - 3 == prev,
+    do: process(list, h, false, result)
+
+  def process(_list, _prev, _flag, _result), do: 0
+  def process([h | list]), do: process(list, h, h > hd(list), 1)
+
+  def dampen(list),
+    do:
+      0..length(list)
+      |> Enum.map(fn x -> list |> List.delete_at(x) |> process() end)
+      |> Enum.sum()
+      |> then(fn x -> if x > 0, do: 1, else: 0 end)
+
+  def get_input(),
+    do:
+      get_string_input("2024", "02")
+      |> String.split("\n")
+      |> Enum.map(fn s -> String.split(s, " ") |> Enum.map(&String.to_integer/1) end)
+
+  def solved_status(), do: :solved
+end