rna-transcription

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Danil Negrienko 2024-06-28 13:11:21 -04:00
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{
"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"
}

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{"track":"elixir","exercise":"rna-transcription","id":"63ab8e36c9144f84a7fdc34eb6d56856","url":"https://exercism.org/tracks/elixir/exercises/rna-transcription","handle":"negrienko","is_requester":true,"auto_approve":false}

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# Used by "mix format"
[
inputs: ["{mix,.formatter}.exs", "{config,lib,test}/**/*.{ex,exs}"]
]

24
elixir/rna-transcription/.gitignore vendored Normal file
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# 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

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# 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.

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# 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

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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

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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

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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

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ExUnit.start()
ExUnit.configure(exclude: :pending, trace: true)