Nucleotide Count in R
Given a DNA string, compute how many times each nucleotide occurs in the string.
exercism fetch r 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...
See this guide for instructions on how to setup your local R environment.
How to implement your solution
In each problem folder, there is a file named
<exercise_name>.R containing a function that returns a
NULL value. Place your implementation inside the body of the function.
How to run tests
Inside of RStudio, simply execute the
test_<exercise_name>.R script. This can be conveniently done with testthat's
auto_test function. Because exercism code and tests are in the same folder, use this same path for both
test_path parameters. On the command-line, you can also run
The Calculating DNA Nucleotides_problem at Rosalind 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.