Re: problem with Delete[]

*To*: mathgroup at smc.vnet.net*Subject*: [mg59007] Re: [mg58917] problem with Delete[]*From*: "Tomas Garza" <tgarza10 at msn.com>*Date*: Tue, 26 Jul 2005 04:03:29 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Delete[v, j] produces a new list containing those elements of v which are not j. It doesn't actually modify v. Tomas Garza Mexico City >From: Heath Gerhardt <heathgerhardt at hotmail.com> To: mathgroup at smc.vnet.net >Subject: [mg59007] [mg58917] problem with Delete[] >Date: Sat, 23 Jul 2005 05:32:47 -0400 (EDT) > >Hello, > >Delete[] is not removing elements of v in the following function, could >anyone tell me why? > >Rn[N_, p_] := Module[{A, v, c, q, i, j}, > A = Table[0, {i, 1, N}, {j, 1, N}]; > v = Table[i, {i, 2, N}]; > c = 1; > For[i = 1, i < N, i++, > j = Random[Integer, {1, Dimensions[v][[1]]}]; > A[[c, v[[j]]]] = 1; > A[[v[[j]], c]] = 1; > q = Random[]; > If[q > p, c = v[[j]]]; > Delete[v, j]; > ]; > A > ] > >thanks in advance, >Heath >