58 lines
1.8 KiB
Markdown
58 lines
1.8 KiB
Markdown
# RNA Transcription
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Given a DNA strand, return its RNA complement (per RNA transcription).
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Both DNA and RNA strands are a sequence of nucleotides.
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The four nucleotides found in DNA are adenine (**A**), cytosine (**C**),
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guanine (**G**) and thymine (**T**).
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The four nucleotides found in RNA are adenine (**A**), cytosine (**C**),
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guanine (**G**) and uracil (**U**).
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Given a DNA strand, its transcribed RNA strand is formed by replacing
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each nucleotide with its complement:
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* `G` -> `C`
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* `C` -> `G`
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* `T` -> `A`
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* `A` -> `U`
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## Getting Started
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Make sure you have read the "Guides" section of the
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[C track][c-track] on the Exercism site. This covers
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the basic information on setting up the development environment expected
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by the exercises.
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## Passing the Tests
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Get the first test compiling, linking and passing by following the [three
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rules of test-driven development][3-tdd-rules].
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The included makefile can be used to create and run the tests using the `test`
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task.
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make test
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Create just the functions you need to satisfy any compiler errors and get the
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test to fail. Then write just enough code to get the test to pass. Once you've
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done that, move onto the next test.
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As you progress through the tests, take the time to refactor your
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implementation for readability and expressiveness and then go on to the next
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test.
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Try to use standard C99 facilities in preference to writing your own
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low-level algorithms or facilities by hand.
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## Source
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Hyperphysics [http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html](http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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[c-track]: https://exercism.io/my/tracks/c
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[3-tdd-rules]: http://butunclebob.com/ArticleS.UncleBob.TheThreeRulesOfTdd
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