Delete unused methods

graph/graph.h

@@ -20,37 +20,21 @@ public:
   // Add edge between v and u
   void insert(const T& v, const T& u);
 
-  // Delete vertex v
-  void erase(T& v);
-  
-  // Delete edge between v and u
-  void erase(T& v, T& u);
-
   // Adjacency matrix representation
   std::set<T> vertices;
-  std::map<T, std::vector<T>> adjMatrix;
+  std::map<T, std::set<T>> adjMatrix;
 };
 
 template<typename T>
-inline void Graph<T>::insert(const T& v) {
+void Graph<T>::insert(const T& v) {
   vertices.insert(v);
 }
 
 template<typename T>
-inline void Graph<T>::insert(const T& v, const T& u) {
+void Graph<T>::insert(const T& v, const T& u) {
   vertices.insert(v);
   vertices.insert(u);
-  adjMatrix[v].push_back(u);
-}
-
-template<typename T>
-inline void Graph<T>::erase(T& v) {
-  //
-}
-
-template<typename T>
-inline void Graph<T>::erase(T& v, T& u) {
-  //
+  adjMatrix[v].insert(u);
 }
 
 } // namespace graph