More Problems

• Write a program to check if a queue can represent a valid binary tree after operations.
• Implement a circular queue that resizes dynamically based on demand.
• Write a program to find the total number of distinct characters in a queue after various operations.
• Implement a function to merge two sorted queues.
• Write a program to find the longest substring without repeating characters using a queue.
• Implement a queue that supports lazy deletion of elements.
• Write a program to find the maximum frequency of characters in a queue after multiple operations.
• Implement a function that simulates a multi-user chat application using a queue.