# suplement exercises

# return "HELLO <your name>!" in this method
# return "HELLO WORLD!" if name is empty
# this method is shouting so you just need
# need to upcase the result
def shout(name)
  name = 'WORLD' if name.empty?
  "HELLO #{name.upcase}!"
end

# return "Drink served!" if the birth date was more
# than 18 years ago.
# return "Go Home!" if is below 18 years or "Drink Served"
# otherwise
def can_drink(birth_date)
  age = (Date.today - birth_date).to_i / 365
  if age >= 18
    'Drink Served!'
  else
    'Go Home!'
  end
end

# return the average number between min and max in the Float format
# # be carefull! sometimes they will be a string that needs
# to be converted
def average(min, max)
  sum = 0
  (min..max).each do |i|
    sum += i
  end
  sum.to_f / (max - min + 1)
end

# return the multiplication table of a number given
# in the parameters up until he reaches max_multiplier
# # it should return a string with the following format
# (example for number 3 and max_multiplier 10)
# 1x3=3
# 2x3=6
# 3x3=9
# 3x4=12
# ...
# 3x10=30
# this method should return a string with each
# computation in each line. you can use \n to do a new line
def multiplication_table(number, max_multiplier)
  table = []
  (1..max_multiplier).each do |i|
    table << "#{number}x#{i}=#{number * i}"
  end
  table.join("\n")
end