Method reverse

src/graph/directed/digraph.rs:33–42

reverse of this digraph

(&self)

    /// reverse of this digraph
    fn reverse(&self) -> Box<dyn IGraph> {
        let mut r = Digraph::from(self.nv);
        for v in 0..self.nv {
            for &w in self.adj(v) {
                r.add_edge(w, v);
            }
        }

        Box::new(r)
    }
}

/// create a V-vertex graph with no edges