Re: position of letters in a string
- To: mathgroup at smc.vnet.net
- Subject: [mg53834] Re: position of letters in a string
- From: "Valeri Astanoff" <astanoff at yahoo.fr>
- Date: Sat, 29 Jan 2005 06:02:42 -0500 (EST)
- References: <ctcr1b$24v$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In[1]:=
f[str_String]:=
With[{ch = Characters[str]//.{a___,b_,c___,b_,d___} ->
{a,b,c,d}},{str,
MapIndexed[{#1,#2[[1]]}&,ch]}];
In[2]:=
f /@ {"catcatz","zrzttys"}
Out[2]=
{{catcatz,{{c,1},{a,2},{t,3},{z,4}}},{zrzttys,{{z,1},{r,2},{t,3},{y,4},{s,
5}}}}