Function graphalgs::generate::random_ungraph
source · pub fn random_ungraph(
nodes: usize,
nedges: usize
) -> Result<HashSet<(usize, usize)>, EdgeNumberError>
Expand description
Random undirected graph.
Create and return a random undirected graph with a given number of nodes and edges. Each undirected edge {i, j} is represented by a pair of directed edges (i, j) and (j, i).
Arguments
nodes
: number of nodes.nedges
: number of edges.
Returns
Err
: if the required number of vertices is greater than the maximum possible.Ok
: setHashSet<(usize, usize)>
of edges withusize
vertex indices.
Examples
use graphalgs::generate::random_ungraph;
use petgraph::{ Graph, Directed };
let graph: Graph::<(), (), Directed, usize> = Graph::from_edges(
random_ungraph(4, 5).unwrap()
);