More Problems

• Write a program to track the last n elements added to a queue.
• Implement a queue for managing user messages in a chat application.
• Write a program to find the longest palindrome substring in a queue of characters.
• Implement a queue that can maintain a history of operations for undo/redo functionality.
• Write a program to find the shortest path in an unweighted grid using BFS with a queue.
• Implement a function to merge two queues without using extra space.
• Write a program to find the first repeated element in a stream using a queue.
• Implement a queue that supports dynamic resizing.