Mathematica 9 is now available
Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2011

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Pattern matching in lists

  • To: mathgroup at smc.vnet.net
  • Subject: [mg116118] Re: Pattern matching in lists
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Thu, 3 Feb 2011 05:26:06 -0500 (EST)

dataT = {1, 3, 2, 6, 5, 1, 4, 6, 3, 9};

dataF = {1, 3, 2, 6, 5, 1, 3, 6, 3, 9};

target = {1, 4, 6};

MemberQ[Partition[#, 3, 1], target] & /@
 {dataT, dataF}

{True, False}

# /. {{s___, Sequence @@ target, f___} -> True,
    {__} -> False} & /@ {dataT, dataF}

{True, False}


Bob Hanlon

---- "Harvey P. Dale" <hpd1 at nyu.edu> wrote: 

=============
MemberQ easily tests whether a single integer appears in a list
of integers.  Suppose, however, that I want to test not for a single
integer but for two or more consecutive integers, e.g., to see whether
{1,4,6} is a member of {1,3,2,6,5,1,4,6,3,9}.  I can do this by
converting both lists into strings and then using string-matching
functions, but is there some way of doing it directly without that
conversion?

Thanks.



  • Prev by Date: Re: Read last expression in a file?
  • Next by Date: Re: Mystifying Scoping of Piecewise Variable?
  • Previous by thread: Re: Pattern matching in lists
  • Next by thread: Re: Pattern matching in lists