Daniel@0: function b = connected(adj_mat, directed)
Daniel@0: %
Daniel@0: % b = connected(adj_mat).
Daniel@0: % Returns true iff the graph is connected.
Daniel@0: 
Daniel@0: n = length(adj_mat);
Daniel@0: start = 1;
Daniel@0: [d, pre] = dfs(adj_mat, start, directed);
Daniel@0: b = (length(pre) == n);