Ruby, value bucketing, beautify code

Question

So I have this code:

def self.age_to_bucket(age)
  age = age.to_i

  if age >= 0 && age <= 12
    1
  elsif age >= 13 && age <= 17
          


        

Answer 1

Just for fun (this is not the efficient way, but for small arrays is just fine):

ranges = [0, 13, 18, 25, 30, 35, 40, 50, 65, Float::INFINITY].each_cons(2).map { |a, b| (a..b) }
n = ranges.map.with_index { |range, idx| idx if range.include?(15) }.compact.first + 1 
#=> 2

Note that if the intervals were dynamic you'd have to implement it in a similar fashion.