More Problems

• Write a program to find the longest valid parentheses substring using a queue.
• Implement a function that uses a queue to track the history of operations.
• Write a program to find the shortest path in a weighted graph using Dijkstras algorithm with a priority queue.
• Implement a queue for managing incoming messages in a chat application.
• Write a program to find the sum of elements in a queue after removing negative numbers.
• Implement a queue that supports multiple priority levels for task management.
• Write a program to check if a queue can be rearranged to form a valid palindrome.
• Implement a queue for managing student attendance and grades.