More Problems

• Write a program to find the maximum frequency of characters in a queue after removing duplicates.
• Implement a queue for managing incoming messages in a chat application.
• Write a program to find the first unique character in a stream of characters using a queue.
• Write a program to implement a queue that supports inserting and deleting elements from both ends.
• Write a program to determine the order of task execution based on their dependencies using a queue.
• Implement a function that checks if a sequence can represent a valid queue sequence after multiple operations.
• Write a program to find the longest palindromic substring in a queue of characters.
• Implement a queue for managing user sessions with timeout features.