Topic: queue-problem / Level: advanced

• 2951. Implement a function that evaluates a mathematical expression given in postfix notation using a queue.
• 2952. Write a program to find the longest increasing subsequence of numbers in a queue using dynamic programming.
• 2953. Implement a queue that can dynamically resize and maintain its order.
• 2954. Write a program to track the history of operations in a queue for undo functionality.
• 2955. Implement a circular queue that supports operations from both ends.
• 2956. Write a program to find the sum of elements in a queue after removing negative values.
• 2957. Implement a queue for managing student attendance in a classroom.
• 2958. Write a program to check if a queue can represent a valid sequence of operations for a binary tree.
• 2959. Implement a function that finds the first k unique elements in a stream using a queue.
• 2960. Write a program to find the maximum frequency of characters in a queue after removing duplicates.
• 2961. Implement a queue for managing user feedback in a software application.
• 2962. Write a program to find the longest contiguous subsequence of even numbers in a queue.
• 2963. Implement a function that uses a queue to simulate a traffic management system.
• 2964. Write a program to find the average of numbers in a queue after removing even numbers.
• 2965. Implement a circular queue for managing tasks in a project.
• 2966. Write a program to find the first unique character in a queue after multiple operations.
• 2967. Implement a function that checks if two queues can represent a valid sequence of stack operations.
• 2968. Write a program to find the maximum product of any two numbers in a queue.
• 2969. Implement a queue that supports lazy deletion of its elements.
• 2970. Write a program to find the longest valid parentheses substring using a queue and stack.
• 2971. Implement a queue for managing incoming messages in a chat application.
• 2972. Write a program to determine if a sequence of operations can produce a valid queue state.
• 2973. Implement a function to find the longest common subsequence of two strings using a queue.
• 2974. Write a program to find the maximum frequency of characters in a queue after various operations.
• 2975. Implement a queue for managing user sessions in a web application.
• 2976. Write a program to find the longest contiguous subsequence of prime numbers in a queue.
• 2977. Implement a circular queue that dynamically resizes based on current usage.
• 2978. Write a program to check if a queue can represent a valid binary search tree after operations.
• 2979. Implement a queue for managing online course registrations.
• 2980. Write a program to find the first unique character in a stream of characters using a queue.
• 2981. Implement a function that tracks the history of enqueue and dequeue operations for undo functionality.
• 2982. Write a program to find the longest increasing subsequence in a queue of integers.
• 2983. Implement a queue for managing scheduled notifications in an application.
• 2984. Write a program to find the total number of distinct elements in a queue after several operations.
• 2985. Implement a function that evaluates an infix expression using a queue and stack.
• 2986. Write a program to check if two queues can represent a valid sequence of operations for a binary tree.
• 2987. Implement a queue that allows simultaneous enqueue and dequeue operations.
• 2988. Write a program to find the longest contiguous subsequence of odd numbers in a queue.
• 2989. Implement a function that simulates a traffic management system using a queue.
• 2990. Write a program to find the average of numbers in a queue after removing odd numbers.
• 2991. Implement a queue for managing tasks in a multi-threaded environment.
• 2992. Write a program to find the longest valid parentheses substring using a queue and stack.
• 2993. Implement a queue for managing product recommendations in an online store.
• 2994. Write a program to find the maximum sum of elements in a queue after removing k elements.
• 2995. Implement a function that checks if a queue can represent a valid infix expression after operations.
• 2996. Write a program to find the total number of elements in a queue after various operations.
• 2997. Implement a queue that maintains the maximum element during a series of operations.
• 2998. Write a program to find the longest increasing subsequence of characters in a queue.
• 2999. Implement a function that uses a queue to find all combinations of k elements from a set.
• 3000. Write a program to find the first unique integer in a queue after multiple operations.

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