More Problems

• Implement a function that uses a queue to generate permutations of a string of size n.
• Write a program to check if two sequences can represent a valid queue sequence after multiple operations.
• Implement a circular queue that supports operations from both ends.
• Write a program to find the longest contiguous subsequence of characters in a queue that can form a palindrome.
• Implement a function to simulate a multi-user chat application using a queue.
• Write a program to determine if a given sequence of numbers can represent a valid sequence of enqueue and dequeue operations.
• Implement a priority queue for scheduling tasks based on their importance and urgency.
• Write a program to find the first k distinct elements in a stream of numbers using a queue.