Re: need to make a special function
- To: mathgroup at smc.vnet.net
- Subject: [mg68317] Re: need to make a special function
- From: "sashap" <pavlyk at gmail.com>
- Date: Tue, 1 Aug 2006 06:59:44 -0400 (EDT)
- References: <eakec7$qvd$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi Nabeel,
You could try the following
In[1]:=
f[k_Integer]:=IntegerDigits[#,2,k]& /@ Range[0,2^k-1]
In[2]:=
f[10];//Timing
Out[2]=
{0. Second,Null}
In[3]:=
f[20];//Timing
Out[3]=
{1.047 Second,Null}
In[4]:=
f[3]
Out[4]=
{{0,0,0},{0,0,1},{0,1,0},{0,1,1},{1,0,0},{1,0,1},{1,1,0},{1,1,1}}
Oleksandr Pavlyk
Wolfram Research
Nabeel Butt wrote:
> Dear Users,
> I need help on making a special type of function which has the
> following properties.
> f[1]={{0},{1}}
> f[2]={{0,0},{0,1},{1,0},{1,1}}
> f[3]={{0,0,0},{0,0,1},{0,1,0},{0,1,1},{1,0,0},{1,0,1},{1,1,0},{1,1,1}}
> .............so on you can see the pattern emerging.
> I need a very efficient code to perform the above evaluation in some
> optimization problem.
> Thanks in advance.
> regards,
> Nabeel
> --
> Nabeel Butt
> LUMS,Lahore