/// \brief Runs %DFS algorithm from node \c s.

     /// \brief Runs %DFS algorithm from node \c s.

     ///

     ///

     /// This method runs the %DFS algorithm from a root node \c s.

     /// This method runs the %DFS algorithm from a root node \c s.

     /// \note d.run(s) is just a shortcut of the following code.

     /// \note d.run(s) is just a shortcut of the following code.

     ///   d.init();

     ///   d.init();

     ///   d.addSource(s);

     ///   d.addSource(s);

     ///   d.start();

     ///   d.start();

     void run(Node s) {

     void run(Node s) {

       init();

       init();

       addSource(s);

       addSource(s);

       start();

       start();

     }

     }