问题
I've got a classification of certain values in different intervals. Most have the form [20-30], but some are of the form [30-infinite).
Is there an interval class you know of which can represent:
- an interval which is not closed on both sides (e.g. (0-5) or [0-5) )
- an interval which closes (or starts) on infinite
回答1:
Time&Money project seems to have Interval class that you need.
See these files in their svn: interval package.
回答2:
The Apache-commons-lang project (http://commons.apache.org/lang/) contains classes dealing with ranges (like IntRange - https://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/math/IntRange.html). I'm not sure it covers all your needs, but it might be worth checking.
回答3:
I know of no library classes, but I recall rather trivially writing such classes.
来源：https://stackoverflow.com/questions/724575/does-an-open-ended-interval-implementation-exist-for-java