From: Chris Pine <chris@...>
Date: 2005-12-14T19:13:54+09:00
Subject: Re: convert seconds to hours:minutes:seconds

On 12/14/05, `p <a@o.e> wrote:
> hello!
> i am trying to convert a number of seconds to a nicely formatted string
> like this:
>
> 7683 seconds = 02:08:03

Well, assuming you know how to arithmetic, conversions, and string
concatenation (and if not, check out http://pine.fm/LearnToProgram/),
all you're missing is how to pad with zeroes.

I do talk about the rjust method, but not that you can use it to pad
with things other than spaces:

  2.to_s.rjust(5,'0')

This pads the string '2' (from 2.to_s) with the string '0'.

Another, fancier (or just more complicated?  :) way:

  irb(main):001:0> '%.5d' % 2
  => "00002"

Hope that helps,

Chris