Re: Deleting elements from a Table

*To*: mathgroup at smc.vnet.net*Subject*: [mg85932] Re: Deleting elements from a Table*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Thu, 28 Feb 2008 02:46:27 -0500 (EST)*Organization*: Uni Leipzig*References*: <fq0u1f$k7g$1@smc.vnet.net> <fq1296$mdj$1@smc.vnet.net> <fq3a9b$fl8$1@smc.vnet.net>*Reply-to*: kuska at informatik.uni-leipzig.de

Hi, this may be very time expensive. But TabIN /. {a___,{q_,_},c___,{q_,_},b___}:> {a,c,b} will do that. Regards Jens Luigi B wrote: > On 26 Feb, 13:56, Jens-Peer Kuska <ku... at informatik.uni-leipzig.de> > wrote: >> Hi, >> >> TabIN /. {a___,{q_,_},{q_,_},b___}:> {a,b} >> >> if the second element are not follow the first, you may >> Sort[] the list. >> >> Regards >> Jens >> >> L.Balz... at gmail.com wrote: >>> Dear All, >>> I have go the following problem: >>> I have a table of elements like {{x1,y1},{x2,y2}....}. Occasionally, >>> two elements have the same x. I would like to drop these elements with >>> a rule-based function. >>> Example: >>> TabIN={{1,1},{1,2},{2,2}}; >>> my desired output is: >>> TabOUT={{2,2}} >>> Any help? >>> Thanks >>> Luigi > > Thanks, it works! > but what if (time-wise) I want to skip the Sort of the input table? > > ciao > Luigi >