Ruby/Rails - How to convert seconds to time?

Question

I need to perform the following conversion:

0     -> 12.00AM
1800  -> 12.30AM
3600  -> 01.00AM
...
82800 -> 11.00PM
84600 -> 11.30PM

Answer 1

Two offers:

The elaborate DIY solution:

def toClock(secs)
  h = secs / 3600;  # hours
  m = secs % 3600 / 60; # minutes
  if h < 12 # before noon
    ampm = "AM"
    if h = 0
      h = 12
    end
  else     # (after) noon
    ampm =  "PM"
    if h > 12
      h -= 12
    end
  end
  ampm = h <= 12 ? "AM" : "PM";
  return "#{h}:#{m}#{ampm}"
end

the Time solution:

def toClock(secs)
  t = Time.gm(2000,1,1) + secs   # date doesn't matter but has to be valid
  return "#{t.strftime("%I:%M%p")}   # copy of your desired format
end

HTH