44 lines
1.5 KiB
Markdown
44 lines
1.5 KiB
Markdown
# 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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* * * *
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For installation and learning resources, refer to the
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[Ruby resources page](http://exercism.io/languages/ruby/resources).
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For running the tests provided, you will need the Minitest gem. Open a
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terminal window and run the following command to install minitest:
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gem install minitest
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If you would like color output, you can `require 'minitest/pride'` in
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the test file, or note the alternative instruction, below, for running
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the test file.
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Run the tests from the exercise directory using the following command:
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ruby nucleotide_count_test.rb
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To include color from the command line:
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ruby -r minitest/pride nucleotide_count_test.rb
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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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