expanding a list
- To: mathgroup at smc.vnet.net
- Subject: [mg42593] expanding a list
- From: Alan Kelly <Alan.Kelly at tcd.ie>
- Date: Thu, 17 Jul 2003 03:45:12 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi all,
I believe that this is a rather elementary question, but I am not
aware of a simple, elegant and efficient solution. I have searched
the MathGroup archive, but with no success.
I have two lists - both of the same length. The first contains a
list of probabilities. For example, suppose the list length is 4
(although in practice it would be much longer) and is of the
following form:
plist = {0.252, 0.252, 0.257, 0.235}.
The second contains a list of integers:
flist = {7,5,6,4}.
I wish to take the first element of plist and replicate that value
using the first element of flist. Similarly for the remaining
elements.
I should finish with a list of length 7+5+6+4 or 22.
Any suggestion please.
Many thanks,
Alan Kelly
Trinity College Dublin
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- From: Tomas Garza <tgarza01@prodigy.net.mx>
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