Bron-Kerbosch algorithm

Bron-Kerbosch algorithm finding all maximal cliques in an undirected graph. A clique is a subset of vertices such that every two distinct vertices are adjacent to each other. The maximal clique is the subset of vertices of an undirected graph where no additional vertex can be added due to the complete connectivity rule. The algorithm lists all maximum cliques of an undirected graph.

The worst-case run time of the algorithm is 3^V/3. wikipedia

Syntax

template <typename V, typename E>
std::vector<std::vector<vertex_id_t>> bron_kerbosch(
    const graph<V, E, graph_type::UNDIRECTED>& graph);

• graph The graph to extract maximal cliques.
• return Returns 2D vector of vertices each vector represent set of vertices that form clique.