From 8a0b02049f614017dbab03b224256883649ac6dc Mon Sep 17 00:00:00 2001
From: Danylo Negrienko <danil@negrienko.com>
Date: Fri, 28 Jun 2024 13:11:21 -0400
Subject: [PATCH] rna-transcription

---
 .../rna-transcription/.exercism/config.json   | 36 +++++++++
 .../rna-transcription/.exercism/metadata.json |  1 +
 elixir/rna-transcription/.formatter.exs       |  4 +
 elixir/rna-transcription/.gitignore           | 24 ++++++
 elixir/rna-transcription/HELP.md              | 75 +++++++++++++++++++
 elixir/rna-transcription/README.md            | 70 +++++++++++++++++
 .../lib/rna_transcription.ex                  | 17 +++++
 elixir/rna-transcription/mix.exs              | 28 +++++++
 .../test/rna_transcription_test.exs           | 28 +++++++
 elixir/rna-transcription/test/test_helper.exs |  2 +
 10 files changed, 285 insertions(+)
 create mode 100644 elixir/rna-transcription/.exercism/config.json
 create mode 100644 elixir/rna-transcription/.exercism/metadata.json
 create mode 100644 elixir/rna-transcription/.formatter.exs
 create mode 100644 elixir/rna-transcription/.gitignore
 create mode 100644 elixir/rna-transcription/HELP.md
 create mode 100644 elixir/rna-transcription/README.md
 create mode 100644 elixir/rna-transcription/lib/rna_transcription.ex
 create mode 100644 elixir/rna-transcription/mix.exs
 create mode 100644 elixir/rna-transcription/test/rna_transcription_test.exs
 create mode 100644 elixir/rna-transcription/test/test_helper.exs

diff --git a/elixir/rna-transcription/.exercism/config.json b/elixir/rna-transcription/.exercism/config.json
new file mode 100644
index 0000000..2f4ada2
--- /dev/null
+++ b/elixir/rna-transcription/.exercism/config.json
@@ -0,0 +1,36 @@
+{
+  "authors": [
+    "rubysolo"
+  ],
+  "contributors": [
+    "angelikatyborska",
+    "Cohen-Carlisle",
+    "dalexj",
+    "devonestes",
+    "drueck",
+    "jinyeow",
+    "lpil",
+    "neenjaw",
+    "parkerl",
+    "pminten",
+    "sotojuan",
+    "Teapane",
+    "tjcelaya",
+    "veelenga",
+    "waiting-for-dev"
+  ],
+  "files": {
+    "solution": [
+      "lib/rna_transcription.ex"
+    ],
+    "test": [
+      "test/rna_transcription_test.exs"
+    ],
+    "example": [
+      ".meta/example.ex"
+    ]
+  },
+  "blurb": "Given a DNA strand, return its RNA Complement Transcription.",
+  "source": "Hyperphysics",
+  "source_url": "https://web.archive.org/web/20220408112140/http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html"
+}
diff --git a/elixir/rna-transcription/.exercism/metadata.json b/elixir/rna-transcription/.exercism/metadata.json
new file mode 100644
index 0000000..8565442
--- /dev/null
+++ b/elixir/rna-transcription/.exercism/metadata.json
@@ -0,0 +1 @@
+{"track":"elixir","exercise":"rna-transcription","id":"63ab8e36c9144f84a7fdc34eb6d56856","url":"https://exercism.org/tracks/elixir/exercises/rna-transcription","handle":"negrienko","is_requester":true,"auto_approve":false}
\ No newline at end of file
diff --git a/elixir/rna-transcription/.formatter.exs b/elixir/rna-transcription/.formatter.exs
new file mode 100644
index 0000000..d2cda26
--- /dev/null
+++ b/elixir/rna-transcription/.formatter.exs
@@ -0,0 +1,4 @@
+# Used by "mix format"
+[
+  inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]
diff --git a/elixir/rna-transcription/.gitignore b/elixir/rna-transcription/.gitignore
new file mode 100644
index 0000000..32ae836
--- /dev/null
+++ b/elixir/rna-transcription/.gitignore
@@ -0,0 +1,24 @@
+# The directory Mix will write compiled artifacts to.
+/_build/
+
+# If you run "mix test --cover", coverage assets end up here.
+/cover/
+
+# The directory Mix downloads your dependencies sources to.
+/deps/
+
+# Where third-party dependencies like ExDoc output generated docs.
+/doc/
+
+# Ignore .fetch files in case you like to edit your project deps locally.
+/.fetch
+
+# If the VM crashes, it generates a dump, let's ignore it too.
+erl_crash.dump
+
+# Also ignore archive artifacts (built via "mix archive.build").
+*.ez
+
+# Ignore package tarball (built via "mix hex.build").
+rna_transcription-*.tar
+
diff --git a/elixir/rna-transcription/HELP.md b/elixir/rna-transcription/HELP.md
new file mode 100644
index 0000000..53f28a3
--- /dev/null
+++ b/elixir/rna-transcription/HELP.md
@@ -0,0 +1,75 @@
+# Help
+
+## Running the tests
+
+From the terminal, change to the base directory of the exercise then execute the tests with:
+
+```bash
+$ mix test
+```
+
+This will execute the test file found in the `test` subfolder -- a file ending in `_test.exs`
+
+Documentation:
+
+* [`mix test` - Elixir's test execution tool](https://hexdocs.pm/mix/Mix.Tasks.Test.html)
+* [`ExUnit` - Elixir's unit test library](https://hexdocs.pm/ex_unit/ExUnit.html)
+
+## Pending tests
+
+In test suites of practice exercises, all but the first test have been tagged to be skipped.
+
+Once you get a test passing, you can unskip the next one by commenting out the relevant `@tag :pending` with a `#` symbol.
+
+For example:
+
+```elixir
+# @tag :pending
+test "shouting" do
+  assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
+end
+```
+
+If you wish to run all tests at once, you can include all skipped test by using the `--include` flag on the `mix test` command:
+
+```bash
+$ mix test --include pending
+```
+
+Or, you can enable all the tests by commenting out the `ExUnit.configure` line in the file `test/test_helper.exs`.
+
+```elixir
+# ExUnit.configure(exclude: :pending, trace: true)
+```
+
+## Useful `mix test` options
+
+* `test/<FILE>.exs:LINENUM` - runs only a single test, the test from `<FILE>.exs` whose definition is on line `LINENUM`
+* `--failed` - runs only tests that failed the last time they ran
+* `--max-failures` - the suite stops evaluating tests when this number of test failures
+is reached
+* `--seed 0` - disables randomization so the tests in a single file will always be ran
+in the same order they were defined in
+
+## Submitting your solution
+
+You can submit your solution using the `exercism submit lib/rna_transcription.ex` command.
+This command will upload your solution to the Exercism website and print the solution page's URL.
+
+It's possible to submit an incomplete solution which allows you to:
+
+- See how others have completed the exercise
+- Request help from a mentor
+
+## Need to get help?
+
+If you'd like help solving the exercise, check the following pages:
+
+- The [Elixir track's documentation](https://exercism.org/docs/tracks/elixir)
+- The [Elixir track's programming category on the forum](https://forum.exercism.org/c/programming/elixir)
+- [Exercism's programming category on the forum](https://forum.exercism.org/c/programming/5)
+- The [Frequently Asked Questions](https://exercism.org/docs/using/faqs)
+
+Should those resources not suffice, you could submit your (incomplete) solution to request mentoring.
+
+If you're stuck on something, it may help to look at some of the [available resources](https://exercism.org/docs/tracks/elixir/resources) out there where answers might be found.
\ No newline at end of file
diff --git a/elixir/rna-transcription/README.md b/elixir/rna-transcription/README.md
new file mode 100644
index 0000000..b0e6b6e
--- /dev/null
+++ b/elixir/rna-transcription/README.md
@@ -0,0 +1,70 @@
+# RNA Transcription
+
+Welcome to RNA Transcription on Exercism's Elixir Track.
+If you need help running the tests or submitting your code, check out `HELP.md`.
+
+## Introduction
+
+You work for a bioengineering company that specializes in developing therapeutic solutions.
+
+Your team has just been given a new project to develop a targeted therapy for a rare type of cancer.
+
+~~~~exercism/note
+It's all very complicated, but the basic idea is that sometimes people's bodies produce too much of a given protein.
+That can cause all sorts of havoc.
+
+But if you can create a very specific molecule (called a micro-RNA), it can prevent the protein from being produced.
+
+This technique is called [RNA Interference][rnai].
+
+[rnai]: https://admin.acceleratingscience.com/ask-a-scientist/what-is-rnai/
+~~~~
+
+## Instructions
+
+Your task is determine the RNA complement of a given DNA sequence.
+
+Both DNA and RNA strands are a sequence of nucleotides.
+
+The four nucleotides found in DNA are adenine (**A**), cytosine (**C**), guanine (**G**) and thymine (**T**).
+
+The four nucleotides found in RNA are adenine (**A**), cytosine (**C**), guanine (**G**) and uracil (**U**).
+
+Given a DNA strand, its transcribed RNA strand is formed by replacing each nucleotide with its complement:
+
+- `G` -> `C`
+- `C` -> `G`
+- `T` -> `A`
+- `A` -> `U`
+
+~~~~exercism/note
+If you want to look at how the inputs and outputs are structured, take a look at the examples in the test suite.
+~~~~
+
+## Source
+
+### Created by
+
+- @rubysolo
+
+### Contributed to by
+
+- @angelikatyborska
+- @Cohen-Carlisle
+- @dalexj
+- @devonestes
+- @drueck
+- @jinyeow
+- @lpil
+- @neenjaw
+- @parkerl
+- @pminten
+- @sotojuan
+- @Teapane
+- @tjcelaya
+- @veelenga
+- @waiting-for-dev
+
+### Based on
+
+Hyperphysics - https://web.archive.org/web/20220408112140/http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html
\ No newline at end of file
diff --git a/elixir/rna-transcription/lib/rna_transcription.ex b/elixir/rna-transcription/lib/rna_transcription.ex
new file mode 100644
index 0000000..3ee2024
--- /dev/null
+++ b/elixir/rna-transcription/lib/rna_transcription.ex
@@ -0,0 +1,17 @@
+defmodule RnaTranscription do
+  @doc """
+  Transcribes a character list representing DNA nucleotides to RNA
+
+  ## Examples
+
+    iex> RnaTranscription.to_rna(~c"ACTG")
+    ~c"UGAC"
+  """
+  @spec to_rna([char]) :: [char]
+  def to_rna(?G), do: ?C
+  def to_rna(?C), do: ?G
+  def to_rna(?T), do: ?A
+  def to_rna(?A), do: ?U
+  def to_rna([char | rest]), do: [to_rna(char) | to_rna(rest)]
+  def to_rna([]), do: []
+end
diff --git a/elixir/rna-transcription/mix.exs b/elixir/rna-transcription/mix.exs
new file mode 100644
index 0000000..8a2487c
--- /dev/null
+++ b/elixir/rna-transcription/mix.exs
@@ -0,0 +1,28 @@
+defmodule RnaTranscription.MixProject do
+  use Mix.Project
+
+  def project do
+    [
+      app: :rna_transcription,
+      version: "0.1.0",
+      # elixir: "~> 1.8",
+      start_permanent: Mix.env() == :prod,
+      deps: deps()
+    ]
+  end
+
+  # Run "mix help compile.app" to learn about applications.
+  def application do
+    [
+      extra_applications: [:logger]
+    ]
+  end
+
+  # Run "mix help deps" to learn about dependencies.
+  defp deps do
+    [
+      # {:dep_from_hexpm, "~> 0.3.0"},
+      # {:dep_from_git, git: "https://github.com/elixir-lang/my_dep.git", tag: "0.1.0"}
+    ]
+  end
+end
diff --git a/elixir/rna-transcription/test/rna_transcription_test.exs b/elixir/rna-transcription/test/rna_transcription_test.exs
new file mode 100644
index 0000000..4a6c2be
--- /dev/null
+++ b/elixir/rna-transcription/test/rna_transcription_test.exs
@@ -0,0 +1,28 @@
+defmodule RnaTranscriptionTest do
+  use ExUnit.Case
+
+  # @tag :pending
+  test "empty RNA sequence" do
+    assert RnaTranscription.to_rna(~c"") == ~c""
+  end
+
+  test "transcribes guanine to cytosine" do
+    assert RnaTranscription.to_rna(~c"G") == ~c"C"
+  end
+
+  test "transcribes cytosine to guanine" do
+    assert RnaTranscription.to_rna(~c"C") == ~c"G"
+  end
+
+  test "transcribes thymidine to adenine" do
+    assert RnaTranscription.to_rna(~c"T") == ~c"A"
+  end
+
+  test "transcribes adenine to uracil" do
+    assert RnaTranscription.to_rna(~c"A") == ~c"U"
+  end
+
+  test "it transcribes all dna nucleotides to rna equivalents" do
+    assert RnaTranscription.to_rna(~c"ACGTGGTCTTAA") == ~c"UGCACCAGAAUU"
+  end
+end
diff --git a/elixir/rna-transcription/test/test_helper.exs b/elixir/rna-transcription/test/test_helper.exs
new file mode 100644
index 0000000..35fc5bf
--- /dev/null
+++ b/elixir/rna-transcription/test/test_helper.exs
@@ -0,0 +1,2 @@
+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)