More Problems

• Write a program to find the total number of distinct characters in a queue after various operations.
• Implement a function to check if a queue can represent a valid sequence of operations for a stack.
• Write a program to find the longest increasing subsequence in a queue of characters.
• Implement a queue that allows retrieval of both maximum and minimum elements efficiently.
• Write a program to check if a queue can represent a valid infix expression after operations.
• Write a program to implement a queue that supports reversing the order of its elements.
• Write a program to find the longest substring of balanced parentheses using a queue.
• Implement a queue for managing scheduled notifications in a messaging app.