Happy Number: WCC W02::C01

def happy_number(number)
  sum_of_digits = []
  flag = true
  while(number != 1)
    number = digits_square_sum(number)
    if sum_of_digits.include?(number)
      flag = false
      break
    else
      sum_of_digits << number
    end
  end
  flag ? 'Happy Number :)' : 'Sad Number :('
end


def digits_square_sum(number)
  square_value_sum = 0
  number.to_s.chars.each do |digit|
     square_value_sum = square_value_sum + digit.to_i ** 2
  end
  square_value_sum
end

happy_number(7)