Topic: queue-problem / Level: beginner

• 1. Implement a queue using arrays.
• 2. Implement a queue using linked lists.
• 3. Write a program to enqueue an element in the queue.
• 4. Write a program to dequeue an element from the queue.
• 5. Write a program to check if the queue is empty.
• 6. Write a program to get the front element of the queue without dequeuing it.
• 7. Implement a circular queue.
• 8. Write a program to reverse a queue using recursion.
• 9. Write a program to print the elements of a queue.
• 10. Write a program to merge two queues.
• 11. Implement a queue of fixed size.
• 12. Write a program to count the number of elements in a queue.
• 13. Write a function to check if the queue is full.
• 14. Write a program to peek at the rear element of the queue.
• 15. Write a program to find the length of the queue.
• 16. Implement a queue using two stacks.
• 17. Write a program to copy all elements from one queue to another.
• 18. Write a program to remove duplicates from a queue.
• 19. Write a program to check if a queue contains a specific element.
• 20. Write a program to print the queue in reverse order.
• 21. Write a program to swap two elements in a queue.
• 22. Write a program to insert an element at a specific position in the queue.
• 23. Write a program to remove an element from a specific position in the queue.
• 24. Write a program to rotate the queue by k positions.
• 25. Write a program to check if a queue forms a palindrome.
• 26. Write a program to find the maximum element in a queue.
• 27. Write a program to find the minimum element in a queue.
• 28. Write a program to convert a queue into a stack.
• 29. Write a program to convert a stack into a queue.
• 30. Write a program to count the occurrences of an element in a queue.
• 31. Implement a function to check if two queues are equal.
• 32. Write a program to find the second largest element in a queue.
• 33. Write a program to interleave two queues.
• 34. Write a program to implement a double-ended queue (deque).
• 35. Write a program to delete the middle element of a queue.
• 36. Write a program to print the first n elements of a queue.
• 37. Write a program to implement a priority queue.
• 38. Write a program to find the average of elements in a queue.
• 39. Write a program to sum all elements in a queue.
• 40. Write a program to merge two sorted queues.
• 41. Write a program to sort a queue.
• 42. Write a program to check if a queue is a subset of another queue.
• 43. Write a program to simulate a simple ticketing system using queues.
• 44. Write a program to find the kth smallest element in a queue.
• 45. Write a program to find the nth element from the end of a queue.
• 46. Write a program to implement a queue using linked list nodes.
• 47. Write a program to implement a basic customer service queue.
• 48. Write a program to check if all elements in the queue are distinct.
• 49. Write a program to implement a queue using dynamic arrays.
• 50. Write a program to find the longest sequence of repeating elements in a queue.

• More Levels

• Intermediate
• Advanced