More Problems

• Implement a queue that tracks the last k elements added and provides quick access.
• Write a program to simulate a multi-stage queue system for task processing.
• Implement a queue for managing user authentication requests in a web application.
• Write a program to find the longest increasing subsequence of elements in a queue.
• Implement a function to check if a queue can represent a valid sequence of operations for a stack.
• Write a program to merge k sorted queues into one sorted queue efficiently.
• Implement a queue that maintains a sorted order of its elements upon insertion.
• Write a program to find the maximum length of a substring with at most two distinct characters using a queue.