Turning long fixed number to array Ruby

Question

Is there a method in ruby to turn fixnum like 74239 into an array like [7,4,2,3,9]?

Answer 1

You can also use Array.new instead of map:

n = 74239

s = Math.log10(n).to_i + 1 # Gets the size of n

Array.new(s) { d = n % 10; n = n / 10; d }.reverse