Ruby Meetup

gistfile1.txt

ALPHA = ('a'..'z').to_a

def missing_alphabets(s)
  alpha_hash = {}
  ALPHA.each {|e| alpha_hash[e] = 0}
  missing = ""
  s.chars.each do |char|
    alpha_hash[char] += 1
  end
  
  num_alphabets = alpha_hash.values.max
  
  alpha_hash.each do |key, value|
    while value < num_alphabets
      missing << key
      value += 1
    end
  end
  
  missing
end