Set.IntSpan
Set.IntSpan
manages sets of integers. It is optimized for sets that
have long runs of consecutive integers. These arise, for example, in
.newsrc files, which maintain lists of articles:
alt.foo: 1-21,28,31
alt.bar: 1-14192,14194,14196-14221
Sets are stored internally in a run-length coded form. This provides
for both compact storage and efficient computation. In particular,
set operations can be performed directly on the encoded
representation.
- Source
IntSpan.java
- Documentation
- Not yet
- Distribution
Set.IntSpan-1.00.tar.gz
Notes
- Someone wanted the Perl
Set::IntSpan
module in Java, so I ported it.
- Iterators aren't finished.
The semantics of the Perl
Set::IntSpan
iterators don't match the
java.util.Iterator
interface.
Set.IntSpan.Iterator
should probably be split into separate forward
and reverse iterators.
Steven W. McDougall /
resume /
swmcd@theworld.com /
2002 Jan 07