# Nucleotide Count Given a single stranded DNA string, compute how many times each nucleotide occurs in the string. The genetic language of every living thing on the planet is DNA. DNA is a large molecule that is built from an extremely long sequence of individual elements called nucleotides. 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. Here is an analogy: - twigs are to birds nests as - nucleotides are to DNA as - legos are to lego houses as - words are to sentences as... ## Resources Remember to check out the Raku [documentation](https://docs.raku.org/) and [resources](https://raku.org/resources/) pages for information, tips, and examples if you get stuck. ## Running the tests There is a test suite and module included with the exercise. The test suite (a file with the extension `.rakutest`) will attempt to run routines from the module (a file with the extension `.rakumod`). Add/modify routines in the module so that the tests will pass! You can view the test data by executing the command `raku --doc *.rakutest` (\* being the name of the test suite), and run the test suite for the exercise by executing the command `prove6 .` in the exercise directory. ## Source The Calculating DNA Nucleotides_problem at Rosalind [http://rosalind.info/problems/dna/](http://rosalind.info/problems/dna/) ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise.