void pop() // Pre: size() > 0. // Post: The highest priority item has been removed from the // p_queue. (If several items have the equal priority, // then the implementation may decide which one to remove.) // void p_queue::pop() { cerr << "pop() not implemented yet" << endl; }
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A: Hello
void pop()
// Pre: size() > 0.
// Post: The highest priority item has been removed from the
// p_queue. (If several items have the equal priority,
// then the implementation may decide which one to remove.)
//
void p_queue::pop()
{
cerr << "pop() not implemented yet" << endl;
}
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- class Queue { private static int front, rear, capacity; private static int queue[]; Queue(int size) { front = rear = 0; capacity = size; queue = new int[capacity]; } // insert an element into the queue static void queueEnqueue(int item) { // check if the queue is full if (capacity == rear) { System.out.printf("\nQueue is full\n"); return; } // insert element at the rear else { queue[rear] = item; rear++; } return; } //remove an element from the queue static void queueDequeue() { // check if queue is empty if (front == rear) { System.out.printf("\nQueue is empty\n"); return; } // shift elements to the right by one place uptil rear else {…A data structure called a deque is closely related to a queue. The name deque stands for “double-ended queue.” The difference between the two is that with a deque, you can insert, remove, or view from either end of the queue. Implement a deque using arraysYou need to implement a class named "Queue" that simulates a basic queue data structure. The class should have the following methods: Enqueue(int value) - adds a new element to the end of the queue Dequeue() - removes the element from the front of the queue and returns it Peek() - returns the element from the front of the queue without removing it Count() - returns the number of elements in the queue The class should also have a property named "IsEmpty" that returns a boolean indicating whether the queue is empty or not. Constraints: The queue should be implemented using an array and the array should automatically resize when needed. All methods and properties should have a time complexity of O(1) You can write the program in C# and use the test cases to check if your implementation is correct. An example of how the class should be used: Queue myQueue = new Queue(); myQueue.Enqueue(1); myQueue.Enqueue(2); myQueue.Enqueue(3); Console.WriteLine(myQueue.Peek()); // 1…
- 35O(N) is the order of growth execution time of the dequeue operation when using the LinkedQueue class, assuming a queue size of N. T OR FDetermine if the following are true or false A "glass" queue allows an application to peek at the front or rear values of a queue. The enqueue and dequeue queue operations are inverses of each other. Therefore, performing an enqueue followed by a dequeue is always equivalent to performing a dequeue followed by an enqueue. A "glass" queue allows an application to peek at any value in a queue. A java interface can inherit from at most one other interface.A double-ended queue or deque (pronounced “deck”) is like a stack or a queue but supports adding and removing items at both ends. A deque stores a collection of items and supports the following API: public class Deque implements Iterable Deque() create an empty deque boolean isEmpty() is the deque empty? int size() number of items in the deque void pushLeft(Item item) add an item to the left end void pushRight(Item item) add an item to the right end Item popLeft() remove an item from the left end Item popRight() remove an item from the right end API for a generic double-ended queue Write a class Deque that uses a doubly-linked list to implement this API and a class ResizingArrayDeque that uses a resizing array
- A queue has five nodes; the data of the nodes is given below: [front / voorkant] 4 -- 7 -- 3 -- 9 -- 2 [back ] After one enqueue function the queue is given below: [front / voorkant] 4 -- 7 -- 3 -- 9 -- 2 -- 1 [back ] What will the queue look like after a node is removed and then a node with the value 15 is added?Suppose the following operations are performed on an empty queue:enqueue(5);enqueue(?);dequeue();enqueue(9);enqueue ( 12);dequeue();enqueue(10);Insert numbers in the following diagram to show what will be stored in the staticqueue after the operations have executed .front rearA number means to push and a dash means pop in the following sequence. Give the sequence of values returned by the pop operations when this sequence of operations is performed on an initially empty queue. 1 4 5 - - 6 7 8 - - - 2 6 - 12 10 - - -
- package queuedemo; class Queue { int front, rear, size; int capacity; int array[]; public Queue(int cap) { capacity = cap; front=size=0; rear=capacity-1; array = new int[capacity]; } // Method to add an item to the queue. void enqueue(int item) { if(isFull()) { System.out.println("Queue overflow"); return; } rear=(rear+1)%capacity; array[rear]=item; size=size+1; } // Queue is empty when size is 0 boolean isEmpty() { return (size == 0); } // Queue is full when size becomes equal to the capacity boolean isFull() { return (size == capacity); } // Method to remove an item from queue. int dequeue() { if (isEmpty()) System.out.println("Queue Underflow"); return; } int item = array[front]; front = (front + 1)% this.capacity;…void do(queue<int>&q){ stack<int>temp; while(!q.empty()){temp.push(q.front()); q.pop();} while(!temp.empty(){q.push(temp.top()); temp.pop();}} After this function the queue q is a. doesn't changed b. has rubbish data c. destroyed (empty) d. reversedQueueArray.java This file implements QueueInterface.java This file has * attributes of an array holding queue elements. An integer represents front * index, an integer for rear index, and an integer to keep track number of * elements in the queue. An overloaded constructor accepts an integer for * initializing the queue size, e.g. array size. An enqueue method receives an * object and place the object into the queue. The enqueue method will throw * exception with message "Overflow" when the queue is full. A dequeue method * returns and removes an object from front of the queue. The dequeue method * will throw exception with message "Underflow" when the queue is empty. A size * method returns number of elements in the queue. A toString method returns a * String showing size and all elements in the queue.