Number Finder

Mix.install([
  {:jason, "~> 1.4"},
  {:kino, "~> 0.8.0", override: true},
  {:youtube, github: "brooklinjazz/youtube"},
  {:hidden_cell, github: "brooklinjazz/hidden_cell"}
])

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Number Finder

Create a NumberFinder module which can find the smallest/1 number in a list, and the largest/1 number in a list.

NumberFinder.smallest([2, 3, 1])
1

NumberFinder.largest([2, 3, 1])
3

defmodule NumberFinder do
  @doc """
  Find the smallest number in a list

  ## Examples

    iex> NumberFinder.smallest([2, 3, 1])
    1
    iex> NumberFinder.smallest([2, 2, 3, 4])
    2
    iex> NumberFinder.smallest([2, 2, 3, 4, 10, 20, -3])
    -3
  """
  def smallest(number_list) do
  end

  @doc """
  Find the largest number in a list

  ## Examples

    iex> NumberFinder.largest([2, 3, 1])
    3
    iex> NumberFinder.largest([2, 2, 3, 4, 4])
    4
    iex> NumberFinder.largest([2, 2, 3, 4, 10, 20, -3])
    20
  """
  def largest(number_list) do
  end
end

Mark As Completed

file_name = Path.basename(Regex.replace(~r/#.+/, __ENV__.file, ""), ".livemd")

save_name =
  case Path.basename(__DIR__) do
    "reading" -> "number_finder_reading"
    "exercises" -> "number_finder_exercise"
  end

progress_path = __DIR__ <> "/../progress.json"
existing_progress = File.read!(progress_path) |> Jason.decode!()

default = Map.get(existing_progress, save_name, false)

form =
  Kino.Control.form(
    [
      completed: input = Kino.Input.checkbox("Mark As Completed", default: default)
    ],
    report_changes: true
  )

Task.async(fn ->
  for %{data: %{completed: completed}} <- Kino.Control.stream(form) do
    File.write!(
      progress_path,
      Jason.encode!(Map.put(existing_progress, save_name, completed), pretty: true)
    )
  end
end)

form

Commit Your Progress

Run the following in your command line from the curriculum folder to track and save your progress in a Git commit. Ensure that you do not already have undesired or unrelated changes by running git status or by checking the source control tab in Visual Studio Code.

$ git checkout -b number-finder-exercise
$ git add .
$ git commit -m "finish number finder exercise"
$ git push origin number-finder-exercise

Create a pull request from your number-finder-exercise branch to your solutions branch. Please do not create a pull request to the DockYard Academy repository as this will spam our PR tracker.

DockYard Academy Students Only:

Notify your teacher by including @BrooklinJazz in your PR description to get feedback. You (or your teacher) may merge your PR into your solutions branch after review.

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