A Perl one-liner doing this: 
$ perl -e 'my $prev; my @c = qw /a c d e r f e a e z e a /; print join
+ " ", grep { $_ ne $prev and $prev = $_;} sort @c'
a c d e f r z

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In reply to Re: Create unique array --the hard way! by Laurent_R
in thread Create unique array --the hard way! by Anonymous Monk

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