xom-interest AT lists.ibiblio.org
Subject: XOM API for Processing XML with Java
List archive
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table
- From: Elliotte Rusty Harold <elharo AT metalab.unc.edu>
- To: John Cowan <jcowan AT reutershealth.com>
- Cc: unicode AT unicode.org, xom-interest AT lists.ibiblio.org
- Subject: [XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table
- Date: Tue, 8 Oct 2002 09:25:06 -0400
At 8:44 AM -0400 10/8/02, John Cowan wrote:
The underlying data structure here is called a "range table", and is
a list of ranges in codepoint order, expressed thus:
start of first range
end of first range + 1
start of second range
end of second range + 1
etc. etc. What you are doing is equivalent to a linear search over
this range followed by loop unrolling. However, you can do better,
especially in complex cases, with a *binary* search over the range
followed by loop unrolling. The trick here is that if the binary
search returns an even value, it succeeds; an odd value fails.
Interesting. Do you have any references on that I can explore further? A quick google search didn't turn up anything relevant. I'm curious to see how the algorithm actually works.
--
+-----------------------+------------------------+-------------------+
| Elliotte Rusty Harold | elharo AT metalab.unc.edu | Writer/Programmer |
+-----------------------+------------------------+-------------------+
| XML in a Nutshell, 2nd Edition (O'Reilly, 2002) |
| http://www.cafeconleche.org/books/xian2/ |
| http://www.amazon.com/exec/obidos/ISBN%3D0596002920/cafeaulaitA/ |
+----------------------------------+---------------------------------+
| Read Cafe au Lait for Java News: http://www.cafeaulait.org/ |
| Read Cafe con Leche for XML News: http://www.cafeconleche.org/ |
+----------------------------------+---------------------------------+
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
Elliotte Rusty Harold, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
John Cowan, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
Elliotte Rusty Harold, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
Mark Davis, 10/08/2002
- [XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table, John Cowan, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
Mark Davis, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
Elliotte Rusty Harold, 10/08/2002
-
[XOM-interest] Re: ISO 8859-11 (Thai) cross-mapping table,
John Cowan, 10/08/2002
Archive powered by MHonArc 2.6.24.