56 lines
1.6 KiB
Markdown
56 lines
1.6 KiB
Markdown
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# Nucleotide Count
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Given a single stranded DNA string, compute how many times each nucleotide occurs in the string.
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The genetic language of every living thing on the planet is DNA.
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DNA is a large molecule that is built from an extremely long sequence of individual elements called nucleotides.
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4 types exist in DNA and these differ only slightly and can be represented as the following symbols: 'A' for adenine, 'C' for cytosine, 'G' for guanine, and 'T' thymine.
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Here is an analogy:
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- twigs are to birds nests as
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- nucleotides are to DNA as
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- legos are to lego houses as
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- words are to sentences as...
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## Running tests
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Execute the tests with:
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```bash
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$ elixir nucleotide_count_test.exs
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```
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### Pending tests
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In the test suites, all but the first test have been skipped.
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Once you get a test passing, you can unskip the next one by
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commenting out the relevant `@tag :pending` with a `#` symbol.
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For example:
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```elixir
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# @tag :pending
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test "shouting" do
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assert Bob.hey("WATCH OUT!") == "Whoa, chill out!"
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end
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```
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Or, you can enable all the tests by commenting out the
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`ExUnit.configure` line in the test suite.
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```elixir
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# ExUnit.configure exclude: :pending, trace: true
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```
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If you're stuck on something, it may help to look at some of
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the [available resources](https://exercism.io/tracks/elixir/resources)
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out there where answers might be found.
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## Source
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The Calculating DNA Nucleotides_problem at Rosalind [http://rosalind.info/problems/dna/](http://rosalind.info/problems/dna/)
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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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