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Groups > comp.lang.java.programmer > #36329

Re: Wanted: List of intervals

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Martin Gregorie wrote:
> On Sat, 18 Feb 2017 08:06:17 +0000, Volker Borchert wrote:
> 
> > Martin Gregorie wrote:
> >> No need of that: the TreeMap class is based on a red-black tree.
> > 
> > At least I'd have to subclass it to reasonably implement the
> > look-at-neighbors-during-addition and to avoid the additional object
> > overhead for either the $Entry (if using TreeSet<Range>) or two Long (if
> > using TreeMap<Long,Long>). And even then, the $Entry will still have
> > three references and one boolean extra. Given that insertion is O(log n)
> > with nontrivial constants,
> >
> There's no reason why the key Long has to be separate: you can define 
> your own class to hold the long and a boolean and use the long's getter 
> method as the key reference.

It'll still be an object separate from the TreeSet/TreeMap $Entry
and have its own two word header and the reference from the $Entry.

-- 

"I'm a doctor, not a mechanic." Dr Leonard McCoy <mccoy@ncc1701.starfleet.fed>
"I'm a mechanic, not a doctor." Volker Borchert  <v_borchert@despammed.com>

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Thread

Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-16 21:13 +0000
  Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-16 17:11 -0500
    Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-17 02:49 +0000
      Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-16 22:32 -0500
        Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-18 07:28 +0000
        Re: Wanted: List of intervals Robert Klemme <shortcutter@googlemail.com> - 2017-02-19 20:02 +0100
          Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 17:13 -0500
            Re: Wanted: List of intervals Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-02-19 17:18 -0500
              Re: Wanted: List of intervals Robert Klemme <shortcutter@googlemail.com> - 2017-02-19 23:31 +0100
                Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 23:00 -0500
                Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 23:09 -0500
              Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-19 22:52 -0500
                Re: Wanted: List of intervals Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-02-20 07:47 -0500
                Re: Wanted: List of intervals Andreas Leitgeb <avl@logic.at> - 2017-02-20 13:30 +0000
                Re: Wanted: List of intervals Arne Vajhøj <arne@vajhoej.dk> - 2017-02-20 08:51 -0500
  Re: Wanted: List of intervals Robert Klemme <shortcutter@googlemail.com> - 2017-02-16 23:18 +0100
    Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-17 02:54 +0000
  Re: Wanted: List of intervals Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-16 23:58 +0000
    Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-17 03:30 +0000
      Re: Wanted: List of intervals Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-17 12:10 +0000
        Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-18 08:06 +0000
          Re: Wanted: List of intervals Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-18 13:18 +0000
            Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-02-18 19:58 +0000
              Re: Wanted: List of intervals Martin Gregorie <martin@address-in-sig.invalid> - 2017-02-18 20:45 +0000
              Re: Wanted: List of intervals Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-02-19 10:57 -0500
                Re: Wanted: List of intervals Andreas Leitgeb <avl@logic.at> - 2017-02-19 17:36 +0000
  Re: Wanted: List of intervals a.laforgia@gmail.com - 2017-02-17 03:13 -0800
  Re: Wanted: List of intervals Eric Sosman <esosman@comcast-dot-net.invalid> - 2017-02-17 08:20 -0500
  Re: Wanted: List of intervals Roedy Green <inquiry@mindprod.com> - 2017-03-08 01:30 -0800
    Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-03-09 19:32 +0000
      Re: Wanted: List of intervals Andreas Leitgeb <avl@logic.at> - 2017-03-09 23:05 +0000
        Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-03-11 01:40 +0000
          Re: Wanted: List of intervals Andreas Leitgeb <avl@logic.at> - 2017-03-11 12:39 +0000
            Re: Wanted: List of intervals v_borchert@despammed.com (Volker Borchert) - 2017-03-11 18:15 +0000
              Re: Wanted: List of intervals Andreas Leitgeb <avl@logic.at> - 2017-03-11 21:47 +0000

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