Implement rna-transcription exercise (#65)

* add rna transcription exercise

* remove garbage files

---------

Co-authored-by: lucaferranti <[email protected]>

config.json

@@ -198,6 +198,14 @@
         "practices": [],
         "prerequisites": [],
         "difficulty": 2
+      },
+      {
+        "slug": "rna-transcription",
+        "name": "RNA Transcription",
+        "uuid": "beda40ac-15ba-4a7c-a88d-acd64a2aeaf2",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 1
       }
     ]
   },

exercises/practice/rna-transcription/.docs/instructions.md

@@ -0,0 +1,20 @@
+# 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.
+~~~~

exercises/practice/rna-transcription/.docs/introduction.md

@@ -0,0 +1,16 @@
+# 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/
+~~~~

exercises/practice/rna-transcription/.meta/config.json

@@ -0,0 +1,17 @@
+{
+  "authors": ["lucaferranti"],
+  "files": {
+    "solution": [
+      "src/rna-transcription.chpl"
+    ],
+    "test": [
+      "test/tests.chpl"
+    ],
+    "example": [
+      ".meta/reference.chpl"
+    ]
+  },
+  "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"
+}

exercises/practice/rna-transcription/.meta/reference.chpl

@@ -0,0 +1,9 @@
+module RnaTranscription {
+
+  const LOOKUP = ["A" => "U", "C" => "G", "G" => "C", "T" => "A"];
+
+  proc toRna(dna: string): string {
+    return "".join([c in dna] LOOKUP[c]);
+  } 
+}
+

exercises/practice/rna-transcription/.meta/tests.toml

@@ -0,0 +1,28 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[b4631f82-c98c-4a2f-90b3-c5c2b6c6f661]
+description = "Empty RNA sequence"
+
+[a9558a3c-318c-4240-9256-5d5ed47005a6]
+description = "RNA complement of cytosine is guanine"
+
+[6eedbb5c-12cb-4c8b-9f51-f8320b4dc2e7]
+description = "RNA complement of guanine is cytosine"
+
+[870bd3ec-8487-471d-8d9a-a25046488d3e]
+description = "RNA complement of thymine is adenine"
+
+[aade8964-02e1-4073-872f-42d3ffd74c5f]
+description = "RNA complement of adenine is uracil"
+
+[79ed2757-f018-4f47-a1d7-34a559392dbf]
+description = "RNA complement"

exercises/practice/rna-transcription/Mason.toml

@@ -0,0 +1,5 @@
+[brick]
+name="rna-transcription"
+version="0.1.0"
+chplVersion="1.33.0"
+type="application"

exercises/practice/rna-transcription/src/rna-transcription.chpl

@@ -0,0 +1,4 @@
+module RnaTranscription {
+  // write your solution here 
+}
+

exercises/practice/rna-transcription/test/tests.chpl

@@ -0,0 +1,28 @@
+use UnitTest;
+use RnaTranscription;
+
+proc test_empty_rna_sequence(test : borrowed Test) throws {
+  test.assertTrue(toRna("").isEmpty());
+}
+
+proc test_rna_complement_of_cytosine_is_guanine(test : borrowed Test) throws {
+  test.assertEqual(toRna("C"), "G");
+}
+
+proc test_rna_complement_of_guanine_is_cytosine(test : borrowed Test) throws {
+  test.assertEqual(toRna("G"), "C");
+}
+
+proc test_rna_complement_of_thymine_is_adenine(test : borrowed Test) throws {
+  test.assertEqual(toRna("T"), "A");
+}
+
+proc test_rna_complement_of_adenine_is_uracil(test : borrowed Test) throws {
+  test.assertEqual(toRna("A"), "U");
+}
+
+proc test_rna_complement(test : borrowed Test) throws {
+  test.assertEqual(toRna("ACGTGGTCTTAA"), "UGCACCAGAAUU");
+}
+
+UnitTest.main();