More Problems

• Write a program to find the longest substring with at most k distinct characters using a queue.
• Implement a function to merge k sorted queues into one sorted queue efficiently.
• Write a program to simulate a round-robin scheduling system using a queue.
• Implement a queue that allows retrieval of both maximum and minimum elements in O(1) time.
• Write a program to determine the minimum number of operations to convert one queue into another.
• Implement a function that uses a queue to find all unique permutations of a given string.
• Write a program to find the maximum frequency of elements in a queue after various operations.
• Implement a queue for managing patient appointments in a hospital.