Count Edges in an Undirected Adjacency List

Count Edges in an Undirected Adjacency List

Usage

count.edges(adj.list)

Arguments

adj.list

Adjacency list for an undirected graph.

Value

Number of undirected edges.

Examples

count.edges(list(c(2L, 3L), 1L, 1L))
#> [1] 2