Nucleotide counter. Takes input of ATGC sequence form dna and returns number of each type in the string using basic regex and a hash. Epicodus exercise.

nucleotide_counter.rb

def nucleo_counter(sequence)
  g = sequence.gsub(/[ATC]/, "").length
  c = sequence.gsub(/[ATG]/, "").length
  a = sequence.gsub(/[GCT]/, "").length
  t = sequence.gsub(/[AGC]/, "").length
  nucleotides = {
    "A's" => a,
    "T's" => t,
    "G's" => g,
    "C's" => c
  }
  puts nucleotides
  end

nucleo_counter("ATCGATGCCCCAT")