Topic: queue-problem / Level: advanced

• 2001. Implement a queue that supports insertion, deletion, and retrieval of the median in O(1) time.
• 2002. Write a program to find the maximum sum of a subarray of size k using a queue.
• 2003. Implement a function to generate all permutations of a given string using a queue.
• 2004. Write a program to check if a sequence of numbers can represent a valid queue sequence.
• 2005. Design a data structure that supports the following operations in O(1) time: insert, delete, get random element, and retrieve maximum.
• 2006. Write a program to find the minimum cost of merging n sorted arrays using a priority queue.
• 2007. Implement a function that uses a queue to perform breadth-first search (BFS) in a graph.
• 2008. Write a program to find the longest valid parentheses substring using a queue.
• 2009. Implement a sliding window maximum algorithm using a queue.
• 2010. Write a program to simulate a multi-level feedback queue scheduling algorithm.
• 2011. Implement a function to solve the "maximum of all subarrays of size k" problem using a double-ended queue.
• 2012. Write a program to determine the order of processing in a queue given specific constraints.
• 2013. Implement a function to check if two queues are equal in terms of elements and order.
• 2014. Write a program to rotate a queue by k elements.
• 2015. Implement a function to find the first non-repeating character in a stream of characters using a queue.
• 2016. Write a program to simulate a round-robin scheduling algorithm using a queue.
• 2017. Implement a function that counts the number of islands in a grid using a queue.
• 2018. Write a program to perform a level-order traversal of a binary tree using a queue.
• 2019. Implement a queue that allows for batch operations, such as enqueueing and dequeueing multiple elements at once.
• 2020. Write a program to find the shortest path in an unweighted graph using a queue.
• 2021. Implement a function to sort a queue using another queue as auxiliary storage.
• 2022. Write a program to find the maximum product of any three numbers in a queue.
• 2023. Implement a queue that supports reversing the order of elements.
• 2024. Write a program to determine if a queue can represent a valid sequence of operations in a stack.
• 2025. Implement a queue that can serialize and deserialize itself.
• 2026. Write a program to compute the largest rectangle that can be formed in a histogram using a queue.
• 2027. Implement a function that calculates the minimum time required to complete all tasks using a queue.
• 2028. Write a program to find the longest common subsequence in two sequences using a queue.
• 2029. Implement a queue for managing events in a simulation environment.
• 2030. Write a program to detect a cycle in a directed graph using a queue.
• 2031. Implement a priority queue to manage tasks based on their priority levels.
• 2032. Write a program to evaluate a postfix expression using a queue.
• 2033. Implement a queue that supports peek operations on both ends.
• 2034. Write a program to find the longest path in a grid with obstacles using a queue.
• 2035. Implement a function to perform a breadth-first traversal of a graph represented as an adjacency list.
• 2036. Write a program to find the minimum number of operations to convert one string into another using a queue.
• 2037. Implement a function that uses a queue to track the state of a game or simulation.
• 2038. Write a program to merge multiple sorted queues into one sorted queue.
• 2039. Implement a function to find the maximum depth of a binary tree using a queue.
• 2040. Write a program to check if a queue can be rearranged to match another queues order.
• 2041. Implement a double-ended queue (deque) with basic operations.
• 2042. Write a program to find the kth largest element in a stream of numbers using a queue.
• 2043. Implement a function to rotate a queue by n positions to the right.
• 2044. Write a program to find all anagrams of a string in a given list using a queue.
• 2045. Implement a queue that supports batch processing of elements in O(n) time.
• 2046. Write a program to determine if its possible to construct a valid expression from a given sequence of numbers using a queue.
• 2047. Implement a function that returns the intersection of two queues.
• 2048. Write a program to find the longest substring without repeating characters using a sliding window and a queue.
• 2049. Implement a priority queue for managing jobs in a computing environment.
• 2050. Write a program to find the shortest path in a weighted graph using Dijkstras algorithm with a queue.

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