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Groups > comp.lang.java.programmer > #34326

Re: Mathematics, Java, good enough

From Duncan Idaho <duncan@dunenoemail.com>
Newsgroups comp.lang.java.programmer
Subject Re: Mathematics, Java, good enough
Date 2016-05-17 18:15 +0100
Organization A noiseless patient Spider
Message-ID <nhfjd2$6da$1@dont-email.me> (permalink)
References <nhesp7$hn7$1@dont-email.me> <words-20160517152443@ram.dialup.fu-berlin.de>

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On 17/05/16 15:43, Stefan Ram wrote:
> Duncan Idaho <duncan@dunenoemail.com> writes:
>> how many strings of length L are possible from
> ...
>> a set of characters S of cardinality C
>
>    If an alphabet has C members, there are C^L words of length
>    L over it, because for every word position, there are C choices,
>    and the choices of positions multiply as one can easily see.
>
>    For example, an octet of bit memory cells has java.lang.Math.pow
>    ( 2, 8 ) possible states. A UHD screen with 24 bits of color can
>    show java.math.BigInteger.valueOf( 2<<23 ).pow( 7680 * 4320 )
>    different pictures.

hmm

That last one was too easy for you guys obviously :-)

So what if I said how many *sets* of cardinality C are there in a set S of cardinality SC

Example
so where C = 8 then "ABCDEFGH" is good but "AABCDEFG" isn't

Idaho


-- 
Duncan Idaho
!(ghola mentat)

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Thread

Mathematics, Java, good enough Duncan Idaho <duncan@dunenoemail.com> - 2016-05-17 11:49 +0100
  Re: Mathematics, Java, good enough Eric Douglas <e.d.programmer@gmail.com> - 2016-05-17 04:55 -0700
  Re: Mathematics, Java, good enough Nigel Wade <nmw@ion.le.ac.uk> - 2016-05-17 12:56 +0100
    Re: Mathematics, Java, good enough Nigel Wade <nmw@ion.le.ac.uk> - 2016-05-17 13:06 +0100
    Re: Mathematics, Java, good enough Duncan Idaho <duncan@dunenoemail.com> - 2016-05-17 13:29 +0100
      Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 09:54 -0400
        Re: Mathematics, Java, good enough FredK <fred.l.kleinschmidt@gmail.com> - 2016-05-17 07:17 -0700
          Re: Mathematics, Java, good enough FredK <fred.l.kleinschmidt@gmail.com> - 2016-05-17 07:29 -0700
            Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 10:58 -0400
              Re: Mathematics, Java, good enough Duncan Idaho <duncan@dunenoemail.com> - 2016-05-17 18:10 +0100
                Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 14:02 -0400
                Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 14:10 -0400
                Re: Mathematics, Java, good enough Eric Douglas <e.d.programmer@gmail.com> - 2016-05-17 11:36 -0700
                Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 16:12 -0400
                Re: Mathematics, Java, good enough Eric Douglas <e.d.programmer@gmail.com> - 2016-05-17 13:56 -0700
                Re: Mathematics, Java, good enough Gene Wirchenko <genew@telus.net> - 2016-05-17 14:13 -0700
                Re: Mathematics, Java, good enough Duncan Idaho <duncan@dunenoemail.com> - 2016-05-18 05:06 +0100
  Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 08:25 -0400
  Re: Mathematics, Java, good enough Martin Gregorie <martin@address-in-sig.invalid> - 2016-05-17 12:24 +0000
  Re: Mathematics, Java, good enough Duncan Idaho <duncan@dunenoemail.com> - 2016-05-17 18:15 +0100
    Re: Mathematics, Java, good enough Jerry Stuckle <jstucklex@attglobal.net> - 2016-05-17 13:33 -0400
    Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 14:09 -0400
      Re: Mathematics, Java, good enough Gene Wirchenko <genew@telus.net> - 2016-05-17 14:17 -0700
        Re: Mathematics, Java, good enough Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-05-17 17:49 -0400

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