At the time that you extract your links and URLs, create a single array the looks like (note: UNTESTED):

@comb = (
  [ 'ebay', 'ebay.com' ],
  [ 'yahoo', 'yahoo.com'],
  [ 'google', 'google.com'],
);
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This can be done, for example:

for ( @whatever) {
  # code that extracts URL and Link here
  push @comb, [ $link, Surl ];
}
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Then you can say:

@bylink = sort {$a->[0] cmp $b->[0] } @comb;

@byurl = sort {$a->[1] cmp $b->[1] } @comb;
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Then create your separate lists if you need them:

@links = map { $_->[0] } @bylink;

@urls = map { $_->[1] } @byurl;
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The map and sort operations can be chained. (This uses concepts form the Schwartzian transform.) I may be confusing what you call link and what you call URL, but I hope you get the point.

--Bob Niederman, http://bob-n.com