More Problems

• Write a program to track the history of operations in a queue for undo functionality.
• Implement a circular queue that supports operations from both ends.
• Write a program to find the sum of elements in a queue after removing negative values.
• Implement a queue for managing student attendance in a classroom.
• Write a program to check if a queue can represent a valid sequence of operations for a binary tree.
• Implement a function that finds the first k unique elements in a stream using a queue.
• Write a program to find the maximum frequency of characters in a queue after removing duplicates.
• Implement a queue for managing user feedback in a software application.