Re: strange random behavior ?
- To: mathgroup at smc.vnet.net
- Subject: [mg69937] Re: strange random behavior ?
- From: dh <dh at metrohm.ch>
- Date: Thu, 28 Sep 2006 06:14:24 -0400 (EDT)
- References: <efdjca$je$1@smc.vnet.net>
Hi Arek,
From what you tell, I guess that the state of the random number
generator depends on the range of random numbers it generates. To give a
definite answer, one would have to know how the random generator is
implemented.
Daniel
Arkadiusz.Majka at gmail.com wrote:
> Hi,
>
> For
>
> SeedRandom[7]
> Table[Random[Integer, {1, 6}], {5}]
> Table[Random[Integer, {1, 3}], {5}]
>
> I get
>
> Out[32]=
> {2,1,6,2,6}
>
> Out[33]=
> {2,1,3,1,3}
>
> When i repeat I obviosly get the same (magic of seedrandom)
>
> SeedRandom[7]
> Table[Random[Integer, {1, 6}], {5}]
> Table[Random[Integer, {1, 3}], {5}]
>
>
> Out[32]=
> {2,1,6,2,6}
>
> Out[33]=
> {2,1,3,1,3}
>
> Bu when I change the range of random numbers in generation of the first
> list , say 1->2
>
> SeedRandom[7]
> Table[Random[Integer, {2, 6}], {5}]
> Table[Random[Integer, {1, 3}], {5}]
>
> I get
>
> Out[35]=
> {3,2,3,6,6}
>
> Out[36]=
> {2,2,3,1,3}
>
> Since Seed is still the same (7), why second list is changed? (Out[36]
> does not equal to Out[33])
>
> This behavior does not take place when we do not deal with tables but
> with single elements.
>
> Arek
>