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# Nucleotide Count Given a DNA string, compute how many times each nucleotide occurs in the string. DNA is represented by an alphabet of the following symbols: 'A', 'C', 'G', and 'T'. Each symbol represents a nucleotide, which is a fancy name for the particular molecules that happen to make up a large part of DNA. Shortest intro to biochemistry EVAR: - twigs are to birds nests as - nucleotides are to DNA and RNA as - amino acids are to proteins as - sugar is to starch as - oh crap lipids I'm not going to talk about lipids because they're crazy complex. So back to nucleotides. DNA contains four types of them: adenine (`A`), cytosine (`C`), guanine (`G`), and thymine (`T`). RNA contains a slightly different set of nucleotides, but we don't care about that for now. ## Setup There are two different methods of getting set up to run the tests with Objective-C: - Create an Xcode project with a test target which will run the tests. - Use the ruby gem `objc` as a test runner utility. Both are described in more detail here: http://exercism.io/languages/objective-c ### Submitting Exercises When submitting an exercise, make sure your solution file is in the same directory as the test code. For example, if you're submitting `Bob.m` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/objective-c/bob/Bob.m`. ## 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.
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