More Problems

• Write a program to check if two binary trees are isomorphic.
• Write a program to find the longest path in a grid with obstacles using dynamic programming.
• Write a program to implement a simple text-based role-playing game (RPG) with quests and combat.
• Write a program to check if a number is a happy number using a cycle detection algorithm.
• Write a program to find the shortest path between two nodes in a graph using the Floyd-Warshall algorithm.
• Write a program to implement a simple online shopping cart with checkout functionality.
• Write a program to check if a string is a valid phone number using regex.
• Write a program to find the sum of the first n prime numbers.