More Problems

• Write a program to implement a queue that allows enqueue and dequeue in O(1) time.
• Write a program to check if a queue can represent a valid infix expression.
• Write a program to find the longest increasing subsequence in a queue.
• Write a program to implement a queue for managing user inputs.
• Write a program to find the maximum frequency of characters in a queue.
• Write a program to check if a queue is valid based on its operations.
• Write a program to remove duplicates from a queue while maintaining order.
• Write a program to implement a queue for managing chat messages.