Method addEdge

Graphs/depth_first_search.py:19–25

(self, fromVertex, toVertex)

    # for adding the edge beween two vertexes
    def addEdge(self, fromVertex, toVertex):
        # check if vertex is already present,
        if fromVertex in self.vertex.keys():
            self.vertex[fromVertex].append(toVertex)
        else:
            # else make a new vertex
            self.vertex[fromVertex] = [toVertex]

    def DFS(self):
        # visited array for storing already visited nodes