From: Tom Norian <tomnorian@...>
Date: 2007-12-18T03:42:29+09:00
Subject: dividing by two and rounding up

Hey all...I am hoping for a tip

I have a table I want to lay out dynamcially in rails where if a game
has 6 periods the first 3 periods will be in the first column and the
4-6 in the second column.  If someone picks an odd number of periods ,
say 5, I want the 1-3 in the first column and 4 and 5 in the second.

I have figured out how to iterate through IF I could get 5/2 to yield me
3.

How do I divide a number (integer) by 2 and get a result that is like:

5/2 I want 3
 6/2 I want 3
7/2 I want 4

I'm thinking perhaps I could test for oddness then add one to the result
if odd, but that seems kinda a lot of lines for something so simple.

half_periods = 0
if num_periods%2 == 1
  half_periods = num_periods/2 +1
else
  half_periods = num_periods/2
end

Is there a better way?
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