From: Jacob Fugal <lukfugl@...>
Date: 2005-07-16T07:26:49+09:00
Subject: Re: [QUIZ] Sampling (#39)

On 7/15/05, Jacob Fugal <lukfugl@gmail.com> wrote:
> And, indeed: 49444444 / 5000000 = 9.8888888

On further examination, the expected length of a sample value would be[1]:

(1..9).sum { |n| n * 9 * 10 ** (n - 10) }

This evaluates to 8.888888889, or 9.888888889 characters per line, or
an expected file size of 49444444.445 bytes. I think Ezra's output is
right on.

Jacob Fugal

[1] My implementation of sum, for those interested.

module Enumerable
  def sum
    self.inject(0) { |sum,n| sum + yield( n ) }
  end
end