Rolling up some integers
- To: mathgroup at smc.vnet.net
- Subject: [mg33404] Rolling up some integers
- From: "DIAMOND Mark R." <dot at dot.dot>
- Date: Wed, 20 Mar 2002 01:53:10 -0500 (EST)
- Organization: The University of Western Australia
- Sender: owner-wri-mathgroup at wolfram.com
Can anyone see an easy way of putting a fiven list of n^2 integers into an n*n matrix along the diagonals---could be either not-snaking (preferred) snaking. The *ordering*, but not necessarily the integers themselves, would be 1 3 6 2 5 8 4 7 9 I would call this non-snaking, or the following, snaking. 1 2 6 3 5 7 4 8 9 Please note,. It occurred to me that this might be possible by first partitioning into ascending and descending size lists representing each diagonal, but aside from constructing an explicit secondary matrix of indices, I can't see another way of doing it. Cheers, Mark -- Mark R. Diamond No spam email ROT13: znexq at cfl.hjn.rqh.nh No crawler web page ROT13 uggc://jjj.cfl.hjn.rqh.nh/hfre/znexq
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