Re: problem with Delete[]
- To: mathgroup at smc.vnet.net
- Subject: [mg58925] Re: [mg58917] problem with Delete[]
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sun, 24 Jul 2005 01:21:47 -0400 (EDT)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
Delete doesn't change v
v={a,b,c,d,e};
Delete[v,3]
{a,b,d,e}
v
{a,b,c,d,e}
If you want v to change, use
v=Delete[v,3]
{a,b,d,e}
v
{a,b,d,e}
Bob Hanlon
>
> From: Heath Gerhardt <heathgerhardt at hotmail.com>
To: mathgroup at smc.vnet.net
> Date: 2005/07/23 Sat AM 05:32:47 EDT
> Subject: [mg58925] [mg58917] problem with Delete[]
>
> 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
>
>