More Problems

• Write a function to convert a directed graph to an undirected graph.
• Implement a program to find the longest path between two nodes in a tree.
• 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.