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Groups > comp.lang.java.programmer > #36347

Re: Wanted: List of intervals

From Arne Vajhøj <arne@vajhoej.dk>
Newsgroups comp.lang.java.programmer
Subject Re: Wanted: List of intervals
Date 2017-02-19 17:13 -0500
Organization Aioe.org NNTP Server
Message-ID <o8d5aa$1pve$1@gioia.aioe.org> (permalink)
References <o854lm$f4d$1@Gaia.teknon.de> <o8583e$7tj$1@gioia.aioe.org> <o85ob3$k76$1@Gaia.teknon.de> <o85qrk$hsd$1@gioia.aioe.org> <egu8f3Fd40lU1@mid.individual.net>

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On 2/19/2017 2:02 PM, Robert Klemme wrote:
> On 17.02.2017 04:32, Arne Vajhøj wrote:
>
>> If that example is realistic then you can simply:
>> * allocate byte array of suitable length
>> * loop through intervals and mark corresponding bytes
>
> What are "corresponding bytes"?  Do you want to use the byte array as a
> bitset and mark all bits corresponding to values inside intervals?

Yes.

>> * loop through bytes and create new intervals
>>
>> But if the numbers really need to be long aka is greater
>> than MAX_INT, then that strategy does not work.
>
> Even for ints the approach seems pretty wasteful, if I understood you
> correctly.

I am not so sure about that. It is O(n) in number of intervals.
No sorting required.

Arne

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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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