More Problems

• Implement a queue for managing user sessions in a web application with expiration features.
• Write a program to find the maximum frequency of characters in a queue after multiple enqueue operations.
• Implement a circular queue that allows simultaneous enqueue and dequeue operations from both ends.
• Write a program to find the longest contiguous subsequence of prime numbers in a queue.
• Implement a function to check if a queue can represent a valid sequence of operations for a double-ended queue.
• Write a program to track the last k elements added to a queue.
• Implement a queue that supports lazy deletion of its elements.
• Write a program to find the longest palindromic substring in a queue of characters.