Build-Cactus
(2) Cactus-DFS
(3) Form the pairs
, where
is the set of nodes from
that map to the leaf
of
.
(4) For each pair
, add a link between a node from
in
and a node from
in
. If
is odd, then connect a node in
to a node in
a different leaf
.
Algorithm 9:
Naor-Gusfield-Martel-Aug-1
.