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- If a queue is empty, Select one: A.You can dequeue an element from the queue B.The size of the queue is 1 C.You cannot enqueue an element into the queue. D.You cannot dequeue an element from the queue.Assume you have a queue with a maximum size of 100 elements and you want to perform the following operations: Enqueue 50 elements into the queue. Dequeue 20 elements from the queue. Enqueue 80 elements into the queue. Dequeue 60 elements from the queue. Enqueue 40 elements into the queue. What is the final size of the queue after performing all these operations?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?
- Queues are often used to simulate situations where people have to wait in line. One scenario we can simulate with a queue is the annual Single’s Night dance at the Elks Lodge. Men and women enter the lodge and stand in line. The dance floor is quite small and there is room for only three couples at a time. As there is room on the dance floor, dance partners are chosen by taking the first man and woman in line. These couples are taken out of the queue and the next set of men and women are moved to the front of the queue. As this action takes place, the program announces the first set of dance partners and who the next people are in line. If there is not a complete couple, the next person in line is announced. If no one is left in line, this fact is displayed.First, let’s look at the data we use for the simulation:F Jennifer IngramM Frank OpitzM Terrill BeckermanM Mike DahlyF Beata LovelaceM Raymond WilliamsF Shirley YawM Don GundolfF Bernica TackettM David DurrM Mike McMillanF Nikki…Please provide an example of how the queue waiting procedure works.Write the following algorithm in python for the below operations on the Queue Qa. Insert (E, Q) – Insert an element E in the queue Q.b. Delete(Q) – Delete the element from the queue Qc. Peek(Q) – Display the element at the front of the queue Q.d. isEmpty(Q) – Checks whether the queue Q is empty or not.
- C++ C++ C++ C++ C++ C++ C++ Data Structure Using C++ (Queue) C++ PROGRAMMING LANGUAGE PLEASE :: We can use a queue to simulate the flow of customers through a check-out line in a store. In this simulation we will have the following details: one check-out line the expected service time for each customer is one minute (However, they may have to wait in line before being serviced) between zero and two customers join the line every minute We can simulate the flow of customers through the line during a time period n minutes long using the following algorithm: Initialize the queue to empty. for ( minute = 0 ; minute < n ; ++minute ) { if the queue is not empty, then remove the customer at the front of the queue. Compute a random number k between 0 and 3. If k is 1, then add one customer to the line. If k is 2, then add two customers to the line. Otherwise (if k is 0 or 3), do not add any customers to the line. } In addition, the algorithm will keep track of…Using the format of Table 8-2 (ATTACHED), complete a table that involves the following sequence of queue operations. Operation State of Queue After Operation Value Returned Create q q.add(a) q.add(b) q.add(c) q.pop() q.pop() q.peek() q.add(x) q.pop() q.pop() q.pop()Java adt Draw the contents of the queue after the following statements execute. Clearly label the front and back of the queue. QueueInterface bankLine = new LinkedQueue<>(); bankLine .enqueue("John"); bankLine .enqueue("Matthew"); String next = bankLine .dequeue(); next = bankLine .dequeue(); bankLine .enqueue("Drew"); bankLine .enqueue("Heather"); next = bankLine .dequeue(); bankLine .enqueue("David"); next = bankLine .dequeue();
- Lab 4: Building a stack with two queuesProblem. Using two queues implement a stack as a class calledQueueStack. Build the following methods:1. push that adds an item to the top of the stack;2. pop that removes an item from the top of the stackand returns the removed item;3. peek that returns the item at the top of the stack;4. isEmpty that checks if the stack is empty.Estimate runtime complexities of the methods that you built.Hint. Use two queues queueIn and queueOut. The first queue queueInserves for pushing new items. When popping an item, move all the itemsbut the last one from queueIn to queueOut.queueIn [1 2 3 4 5] −→queueIn [5]queueOut [ ] −→queueOut [1 2 3 4]Now the item to be popped is in queueIn. Remove and return that asthe item on top of the stack.queueIn [ ]queueOut [1 2 3 4]Now you should swap the queues, so this algorithm may be repeatednext time when one has to pop the stack.queueIn [1 2 3 4]queueOut [ ] (ready for moving items)1python help. Write a LikedQueue (code at bottom) Test it by: Add numbers from 13 to 23 in the queue. Print the length of the queue Check if the queue is empty Show the item at the front of the queue Remove the first item in the queue Add 100 to the queue Remove all items in the queue Check if the queue is empty """File: linkedqueue.pyAuthor: Ken Lambert"""from node import Nodefrom abstractcollection import AbstractCollectionclass LinkedQueue(AbstractCollection):"""A link-based queue implementation."""# Constructordef __init__(self, sourceCollection = None):"""Sets the initial state of self, which includes thecontents of sourceCollection, if it's present."""self.front = self.rear = NoneAbstractCollection.__init__(self, sourceCollection)# Accessor methodsdef __iter__(self):"""Supports iteration over a view of self."""passdef peek(self):"""Returns the item at the front of the queue.Precondition: the queue is not empty.Raises: KeyError if the stack is empty."""if self.isEmpty():raise…Show the state of the queue with the corresponding characters during the following sequence of queue operations, if executed on an initially empty queue? DA* T * A P *L*US (NB: A letter means “Enqueue()” while an asterisks means “Dequeue()”). Show your steps of execution)