From: Toby Kelsey <toby.kelsey@gmail.com>
To: caml-list@inria.fr
Cc: syshen@nudt.edu.cn
Subject: Re: [Caml-list] [CAML]:: efficient data structure for storing and searching int list list
Date: Fri, 12 Apr 2013 23:15:25 +0100 [thread overview]
Message-ID: <5168877D.1090103@gmail.com> (raw)
In-Reply-To: <58e60ce1.4599.13dfeacfdb3.Coremail.syshen@nudt.edu.cn>
On 12/04/13 15:36, 沈胜宇 wrote:
> Dear all:
> I have an int list list, whose name is LL
> and I need to frequently decide whether a particular int list, whose name is L, is a sublist of an element of LL.
>
> Is there any efficent data structure to do this?
A data structure useful for finding substrings quickly is the "suffix tree",
this can be built in O(n) - for small alphabets - or O(n log n) time and
substring searches take O(length substring) time. The suffix tree takes more
space than the original string though. An int list can take the role of the
string here.
Toby
next prev parent reply other threads:[~2013-04-12 22:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-12 14:36 沈胜宇
2013-04-12 15:01 ` simon cruanes
2013-04-12 15:48 ` Jean-Francois Monin
2013-04-13 6:58 ` 沈胜宇
2013-04-13 7:56 ` Gabriel Scherer
2013-04-12 22:15 ` Toby Kelsey [this message]
2013-04-13 6:57 ` 沈胜宇
2013-04-23 9:05 ` Goswin von Brederlow
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