Re: Finding non-unique strings in a cell array

[Olaf Till]

On Tue, May 24, 2011 at 12:13:41PM +0100, Andy Buckle wrote:
> I have a feeling that I am overcomplicating. Is there a better way than this?
> 
> >a={'a','b','1'}; cellfun(@(x)sum(strcmp(x,a))>1,a)
> ans =
> 
>    0   0   0
> 
> >a={'a','b','b'}; cellfun(@(x)sum(strcmp(x,a))>1,a)
> ans =
> 
>    0   1   1
> 
> -- 
> /* andy buckle */

Maybe this:

octave:1> t = {"a", "b", "a", "c", "c", "a"};
octave:2> [t, idx] = sort (t);
octave:3> tidx = strcmp (t(1:end-1), t(2:end));
octave:4> ttidx = [tidx, false] | [false, tidx];
octave:5> result = false (size (ttidx));
octave:6> result(idx) = ttidx
result =

   1   0   1   1   1   1

Olaf