gistfile1.txt

def mode(array)
  hash = {}
  array.each do |number|
    if hash[number] == nil
      hash[number] = 1
    elsif hash[number] 
      hash[number] += 1
    end
  end
  
  @counts = []
  hash.each do |pair|
    @counts << pair.last
  end
  
  @highest_count = @counts.max
  @equal_frequency_response = []
  
  if @counts.count(@highest_count) > 1
    hash.each do |pair|
      if pair.last == @highest_count
        @equal_frequency_response << pair.first
      end
    end
    return @equal_frequency_response
  else
    hash.each do |pair|
      if pair.last == @highest_count
        return [pair.first]
      end
    end
  end
end