From: "Jacob, Raymond A Jr" <raymond.jacob@...>
Date: 2007-01-15T20:54:24+09:00
Subject: Re: how to translate base 10 number into base 2 number

Is there a way to pad the result with leading zeros
i.e. 4.to_s(2)
"100"
What I am trying to do is sort ip addresses
i.e. "192.61.14.30"
When I try to convert "192.61.14.30"
 a ="192.61.14.30".split(/\./)
 b = a.collect{|i| i.to_i.to_s(2) }
 p b
 ["11000000","111101", "1110", "11110"]
 p b.join
 "11000000111101111011110".to_i

How would you pad the results of .to_s(2) to come up with a byte?

Thank you,
raymond


-----Original Message-----
From: khaines@enigo.com [mailto:khaines@enigo.com] 
Sent: Sunday, January 14, 2007 12:07
To: ruby-talk ML
Subject: Re: how to translate base 10 number into base 2 number

On Mon, 15 Jan 2007, chen li wrote:

> Hi all,
>
> I want to write a method to tranlate base 10 number into base 2 
> number. I want to call the method within itself. But it doesn't work. 
> What is the right way to do something like this?

This doesn't answer your question, but in case you were not aware, Ruby
will do this conversion for you:


a = 125
puts a.to_s(2)
1111101


Kirk Haines