Re: Re: Deleting duplicates from a list

*To*: mathgroup at smc.vnet.net*Subject*: [mg76049] Re: [mg76000] Re: [mg75940] Deleting duplicates from a list*From*: Murray Eisenberg <murray at math.umass.edu>*Date*: Tue, 15 May 2007 04:58:43 -0400 (EDT)*Organization*: Mathematics & Statistics, Univ. of Mass./Amherst*References*: <200705140725.DAA22641@smc.vnet.net> <200705140948.FAA26049@smc.vnet.net>*Reply-to*: murray at math.umass.edu

What's wrong with just Union here? Union[{8,8,11,11,19}] {8,11,19} Adriano Pascoletti wrote: > This is the unsorted union problem, which can be efficiently solved > using Sow and Reap (see Help Browser > Reap > Further Examples) > > In[8]:=UnsortedUnion[x_] := Reap[Sow[1, x], _, #1 & ][[2]] > > In[9]:=UnsortedUnion[{8, 8, 11, 11, 19}] > > Out[9]={8, 11, 19} > > Adriano Pascoletti > > On 14 mag 2007, at 09:25, Raul Martinez wrote: > >> Hi all, >> >> I have a list, e.g., {8, 8, 11, 11, 19}. I want to eliminate all >> duplicates so the list becomes {8, 11, 19}. Can anyone suggest a >> command that will do this? >> >> TIA, >> >> Raul Martinez >> > > -- Murray Eisenberg murray at math.umass.edu Mathematics & Statistics Dept. Lederle Graduate Research Tower phone 413 549-1020 (H) University of Massachusetts 413 545-2859 (W) 710 North Pleasant Street fax 413 545-1801 Amherst, MA 01003-9305

**References**:**Deleting duplicates from a list***From:*Raul Martinez <raulmart@mac.com>

**Re: Deleting duplicates from a list***From:*Adriano Pascoletti <adriano.pascoletti@dimi.uniud.it>