Function map_unweighted_with_order 

pub fn map_unweighted_with_order(
    num_vertices: usize,
    edges: &[(usize, usize)],
    vertex_order: &[usize],
) -> MappingResult<KsgTapeEntry>

Map a graph with a specific vertex ordering (unweighted).

Panics

Panics if num_vertices == 0.