More Problems

• Write a function to find the total number of vertices in a graph.
• Implement a function to find all vertices with no incoming edges in a directed graph.
• Write a program to add a vertex to a graph.
• Implement a function to find all isolated vertices in a graph.
• Write a function to check if a graph contains a simple path.
• Implement a program to find all the bridges in an undirected graph.
• Write a function to determine if a graph is a planar graph.
• Implement a program to count the number of isolated vertices in a graph.