RE: need to make a special function
- To: mathgroup at smc.vnet.net
- Subject: [mg68334] RE: [mg68284] need to make a special function
- From: "David Park" <djmp at earthlink.net>
- Date: Tue, 1 Aug 2006 07:00:08 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Nabeel, I'm not certain if this is the most efficient or elegant but how about... f[n_] := Module[{p, x, iters}, x = Table[p[i], {i, 1, n}]; iters = Table[{p[i], 0, 1}, {i, 1, n}]; Flatten[ Table[x, Evaluate[Sequence @@ iters]], n - 1] ] 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}} f[4] {{0, 0, 0, 0}, {0, 0, 0, 1}, {0, 0, 1, 0}, {0, 0, 1, 1}, {0, 1, 0, 0}, {0, 1, 0, 1}, {0, 1, 1, 0}, {0, 1, 1, 1}, {1, 0, 0, 0}, {1, 0, 0, 1}, {1, 0, 1, 0}, {1, 0, 1, 1}, {1, 1, 0, 0}, {1, 1, 0, 1}, {1, 1, 1, 0}, {1, 1, 1, 1}} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Nabeel Butt [mailto:nabeel.butt at gmail.com] To: mathgroup at smc.vnet.net 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