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Re: Re: HOWTO: convert flat list w/ level information

Subject: Re: Re: HOWTO: convert flat list w/ level information to a hierarchialone?u
From: David Tolpin <dvd@xxxxxxxxxxxxxx>
Date: Wed, 3 Dec 2003 15:25:29 +0400 (AMT)
Re:  Re: HOWTO: convert flat list w/ level information
Michael,

you are right. I've attempted a formal proof and it appears that an algorithm
according to your suggestion would have quadratic time. My apologies.

I then looked at the output of the Dimitre's stylesheet and discovered that
it generates duplicates leaf nodes in certain cases, thus causing exponential
time.

Yes, the time for the original algorithm is quadratic by length, so my approach (while
linear by length) is probably not required. 

Thank you,
David

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