The great packaging of 2020
| author |
Steve Losh <steve@stevelosh.com> |
| date |
Sun, 19 Jan 2020 20:38:29 -0500 |
| parents |
638d42c1ebe6 |
| children |
(none) |
(defpackage :rosalind/gc (:use :cl :rosalind :losh :iterate))
(in-package :rosalind/gc)
(defparameter *input* ">Rosalind_6404
CCTGCGGAAGATCGGCACTAGAATAGCCAGAACCGTTTCTCTGAGGCTTCCGGCCTTCCC
TCCCACTAATAATTCTGAGG
>Rosalind_5959
CCATCGGTAGCGCATCCTTAGTCCAATTAAGTCCCTATCCAGGCGCTCCGCCGAAGGTCT
ATATCCATTTGTCAGCAGACACGC
>Rosalind_0808
CCACCCTCGTGGTATGGCTAGGCATTCAGGAACCGGAGAACGCTTCAGACCAGCCCGGAC
TGGGAACCTGCGGGCAGTAGGTGGAAT")
(defparameter *output* "Rosalind_0808
60.919540")
(define-problem gc (data stream) *input* *output*
(labels ((gcp (base)
(or (char= #\G base)
(char= #\C base)))
(gc-content (string)
(/ (count-if #'gcp string)
(length string))))
(iterate
(for (label dna) :in-fasta data)
(for gc = (gc-content dna))
(finding (format nil "~A~%~,6F" label (* 100 gc))
:maximizing gc))))