More Problems

• Write a function to find the ancestors of a node in a tree.
• Write a program to find the lowest common ancestor of two nodes in a binary tree.
• Check if a graph is Eulerian.
• Find the articulation points in a graph.
• Write a function to find the shortest path using DFS.
• Implement a program to reverse the edges of a graph.
• Write a program to print the degree of each vertex.
• Implement an algorithm to flatten a binary tree.