Topic: queue-problem / Level: intermediate

• 1901. Write a program to implement a queue that retrieves both the maximum and minimum elements efficiently.
• 1902. Write a program to find the sum of all elements in a queue after removing negative numbers.
• 1903. Write a program to check if a queue can represent a valid sequence of stack operations.
• 1904. Write a program to implement a circular queue for managing incoming requests in a help desk.
• 1905. Write a program to find the first unique integer in a queue after multiple operations.
• 1906. Write a program to simulate a grocery store checkout line using a queue.
• 1907. Write a program to implement a priority queue using a binary heap.
• 1908. Write a program to find the longest subsequence of characters in a queue that forms a palindrome.
• 1909. Write a program to check if a queue can be rearranged to represent a valid postfix expression.
• 1910. Write a program to implement a queue for managing online shopping carts.
• 1911. Write a program to find the longest contiguous subsequence of odd numbers in a queue.
• 1912. Write a program to check if two queues can represent the same sequence of operations.
• 1913. Write a program to implement a queue that allows for priority-based processing.
• 1914. Write a program to find the total number of distinct elements in a queue after several operations.
• 1915. Write a program to check if a queue can represent a valid sequence of operations for a stack.
• 1916. Write a program to implement a queue for managing student attendance in a classroom.
• 1917. Write a program to find the average of elements in a queue after removing even numbers.
• 1918. Write a program to simulate a call center queue for handling customer inquiries.
• 1919. Write a program to implement a queue for managing daily tasks in an application.
• 1920. Write a program to find the longest subsequence of prime numbers in a queue.
• 1921. Write a program to check if two queues can be merged to form a valid binary search tree.
• 1922. Write a program to implement a queue that retrieves the last element efficiently.
• 1923. Write a program to find the maximum product of any two numbers in a queue after multiple operations.
• 1924. Write a program to check if a queue can represent a valid binary tree after operations.
• 1925. Write a program to implement a circular queue using arrays for task management.
• 1926. Write a program to find the first unique character in a queue after multiple enqueue operations.
• 1927. Write a program to simulate a customer service queue for handling complaints.
• 1928. Write a program to find the longest contiguous subsequence of characters in a queue.
• 1929. Write a program to implement a queue for managing customer reviews.
• 1930. Write a program to find the average of all elements in a queue after removing duplicates.
• 1931. Write a program to check if a queue can represent a valid infix expression after operations.
• 1932. Write a program to implement a queue for managing project tasks.
• 1933. Write a program to find the smallest number in a queue after multiple operations.
• 1934. Write a program to simulate a print job queue for a printer with multiple requests.
• 1935. Write a program to implement a queue for managing event registrations.
• 1936. Write a program to find the total number of items in a queue after various operations.
• 1937. Write a program to check if two queues can represent a valid binary search tree.
• 1938. Write a program to implement a queue that allows retrieving both maximum and minimum elements.
• 1939. Write a program to find the sum of elements in a queue after removing odd numbers.
• 1940. Write a program to simulate a job scheduling queue for managing tasks.
• 1941. Write a program to implement a queue for managing employee evaluations.
• 1942. Write a program to find the maximum frequency of characters in a queue after multiple operations.
• 1943. Write a program to check if a queue can represent a valid sequence of operations.
• 1944. Write a program to find the longest subsequence of even integers in a queue.
• 1945. Write a program to implement a queue for managing online course registrations.
• 1946. Write a program to find the average of numbers in a queue after removing odd numbers.
• 1947. Write a program to simulate a waiting list for an event using a queue.
• 1948. Write a program to implement a queue for managing customer feedback.
• 1949. Write a program to find the first unique character in a queue after several operations.
• 1950. Write a program to check if two queues can represent a valid sequence of numbers.

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