given a string (that is also capitalized) input to a function, how to test whether it includes letters 'a', 'g', 't', and 'c'? in ruby

main.rb
def includes_specific_letters?(input_string)
  # Use the match? method with a regular expression to test whether the string matches the pattern
  # [agtc]+ - matches any sequence of one or more occurrences of the letters 'a', 'g', 't', and 'c'
  # i - makes the match case-insensitive
  input_string.match?(/[agtc]+/i)
end

# Testing the function
puts includes_specific_letters?("ACGTA") # true
puts includes_specific_letters?("ACGTB") # true
puts includes_specific_letters?("XYZ") # false
490 chars
12 lines