More Problems

• Write a program to check if a queue is valid based on its operations.
• Write a program to implement a queue for managing online messages.
• Write a program to find the total number of characters in a queue after operations.
• Write a program to check if a queue can represent a valid binary tree.
• Write a program to find the first repeated character in a queue after multiple operations.
• Write a program to implement a queue for managing feedback submissions.
• Write a program to find the total sum of all numbers in a queue.
• Write a program to check if a queue is empty after multiple enqueue and dequeue operations.