I am trying to write a script to find the lowest common ancestor for a list of ids

I have a file with the parent of each id, and have parsed this into a Hash containing the parent of every id %HoPar. This code not shown, but working properly

Then I am making an array of ancestors for each id. Then in a final step I am comparing all of these ancestor arrays to find the intersection. This is where I am having problems, I'm not sure of the syntax to create the List::Compare object. Any help appreciated

my %HoAncestors;
foreach my $qu (keys %HoTxHits) {
        # go through each taxid, get ancestors, then find the intersec
+tion
        foreach my $taxid (@{$HoTxHits{$qu}}){
                my $queryTaxid=$taxid;
                while ((exists $HoPar{$queryTaxid}) && ($HoPar{$queryT
+axid} != 1)) {
                        my $parent=$HoPar{$queryTaxid};
                        push (@{$HoAncestors{$taxid}},$parent);
                        $queryTaxid=$parent;
                }
        }
        $lcm=List::Compare=>new(\
        @intersection=$lcm->get_intersection;
        }
}

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In reply to Passing List::Compare a list of arrays by AWallBuilder

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