/usr/share/perl5/Graph/Traversal/BFS.pm is in libgraph-perl 1:0.91-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | package Graph::Traversal::BFS;
use strict;
use Graph::Traversal;
use base 'Graph::Traversal';
sub current {
my $self = shift;
$self->{ order }->[ 0 ];
}
sub see {
my $self = shift;
shift @{ $self->{ order } };
}
*bfs = \&Graph::Traversal::postorder;
1;
__END__
=pod
=head1 NAME
Graph::Traversal::BFS - breadth-first traversal of graphs
=head1 SYNOPSIS
use Graph;
my $g = Graph->new;
$g->add_edge(...);
use Graph::Traversal::BFS;
my $b = Graph::Traversal::BFS->new(%opt);
$b->bfs; # Do the traversal.
=head1 DESCRIPTION
With this class one can traverse a Graph in breadth-first order.
The callback parameters %opt are explained in L<Graph::Traversal>.
=head2 Methods
The following methods are available:
=over 4
=item dfs
Traverse the graph in depth-first order.
=back
=head1 SEE ALSO
L<Graph::Traversal>, L<Graph::Traversal::DFS>, L<Graph>.
=cut
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