if (localflag) {
fail("*** Phylo_nj: Leaves of the tree were not encountered in the expected order");
}
i=tree.comancestor(0,7);
// System.out.println("Common ancestor of 0,7: %f\n", i);
Phylo_nj rerootedtree=new Phylo_nj(dist,i);
// System.out.println("Rerooted Tree:");
// print_tree(rerootedtree,rerootedtree.root);