my @data = qw/a mnk ab m b bc abcd cd bcd bd m nk /;

my $prev = '';
@data = grep { substr($prev, 0, length) ne $_ and ($prev = $_,1) }
        reverse sort @data;

[download]

update: Whoops, I hought it was initial substrings. Thanks ikegami for pointing out my foolishosity!

Dave.

In reply to Re: Seeking the longest string in an array by dave_the_m
in thread Seeking the longest string in an array by johnnywang

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