Re: Table with condition

• To: mathgroup at smc.vnet.net
• Subject: [mg130240] Re: Table with condition
• From: Sseziwa Mukasa <mukasa at gmail.com>
• Date: Tue, 26 Mar 2013 04:05:29 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• Delivered-to: l-mathgroup@wolfram.com
• Delivered-to: mathgroup-newout@smc.vnet.net
• Delivered-to: mathgroup-newsend@smc.vnet.net
• References: <20130325032310.11A0569D2@smc.vnet.net>

```One approach is the NestWhileList:

Most[NestWhileList[RandomInteger[{0, 10}] &, RandomInteger[{0, 10}], # != 5 &]]

Another is a simple While loop

result = {};
Block[{random},
While[(random = RandomInteger[{0, 10}]) != 5, result = {result, random}];
Flatten[result]]

Regards,
Sseziwa

On Mar 24, 2013, at 11:23 PM, =8Aer=FDch Jakub <Serych at panska.cz> wrote:

> Dear mathgroup,
> I need to start creating list and continue until some condition is not met.  For example to generate list of random numbers until the value is not 5. Yes, it is theoreticaly possible to generate list with sufficient length, and cut it on the right place afterwords, but it is very inefficient way if the computation is much harder than just generation of random numbers.
>
> TakeWhile[Table[RandomInteger[{0, 10}], {15}], # != 5 &]
>
> Using the while cycle is the other way, but I can only print values using that method, but I don't know, how to generate classical list:
>
> r = 0;
> While[r != 5, r = RandomInteger[{0, 10}]; Print[r]]
>
> What is the right solution of such a simple problem?
>
> Thanks in advance for any help
>
> Jakub
>
>

```

• Prev by Date: Re: Overdetermined NDSolve
• Next by Date: Insufficient memory "General::nomem:" using Tuples
• Previous by thread: Re: Table with condition
• Next by thread: Re: Table with condition