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MathGroup Archive 2005

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Re: filling in an array

  • To: mathgroup at smc.vnet.net
  • Subject: [mg55356] Re: filling in an array
  • From: Peter Pein <petsie at arcor.de>
  • Date: Sun, 20 Mar 2005 04:11:48 -0500 (EST)
  • References: <d1guie$sc$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

dumb_founded wrote:
> How can I input values into an array most efficiently?  I tried the
> code below, but it doesn't work.  The kernel starts working through the
> loop and never gets out.
> 
> Array[b, 10];
> For[i = 1, i = 10, b[i] = i/10]
> 
1. If nothing else helps, look at the documetation:

For[start, test, incr, body] executes start, then repeatedly evaluates
body and incr until test fails to give True.

2. to compare the values of two expressions use ==, not =

3. Had a look at the result of Array[b,10]?? Do so.

4. To address the elemnts of a List use b[[i]] not b[i]

5. Just guessing:

b=Array[1/#&,10]
 or
For[b=Table[,{10}]; i=1, i<=10, i++, b[[i]]=1/i];

??

-- 
Peter Pein
Berlin


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