Question

I know this is a classic interview question, but here is my quick attempt at creating a function which returns the lowest common multiple of two numbers, something I never have to do in my day job:

def calc_common_multiplyer(int_low, int_high)
  i = 1
  int_high_res = []

  while true
    int_high_res << int_high * i
    if int_high_res.include?(int_low * i)
      return int_low * i
    end 
    i = i+1
  end
end

I feel that this is very clunky. Is there a more efficient or standard solution?

Answer 1

I’d do this in Ruby:

x.lcm(y)

🙂