For a List implemented with a linked-list, the method bool Reverse() is implemented as follows: void List::Reverse() { } if (front==NULL) return; Node *temp1, *temp2, *temp3; temp2=front; temp3=front->next; while (temp3!=NULL) { } temp1=temp3->next; temp3->next=front; //missing line temp3=temp1; temp2->next=NULL; The missing line should be: O a. front-temp2; O b. front-temp1; O c. temp2=NULL; O d. temp1-temp3; O front-temp3;

For a List implemented with a linked-list, the method bool Reverse() is implemented as follows: void List::Reverse() { } if (front==NULL) return; Node temp1, temp2, *temp3; temp2=front; temp3=front->next; while (temp3!=NULL) { } temp1=temp3->next; temp3->next=front; //missing line temp3=temp1; temp2->next=NULL; The missing line should be: O a. front-temp2; O b. front-temp1; O c. temp2=NULL; O d. temp1-temp3; O front-temp3;

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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The regular queue is a FIFO structure, meaning that you can only enqueue at the rear and dequeue at the front. Suppose that the dequeue operation can also be performed at the rear (so you can remove and return the last element on the queue), which of the following describes the correct and efficient way of using a linked list to implement this queue? OUsing a singly linked list with a reference to the head only, the dequeue method traverses it, stops at the last node and removes it. O Using a singly linked list with a reference to the head only, the dequeue method traverses it, stops at the second to last node and removes the last node. O Using a singly linked list with references that point to the first and the last nodes respectively, the dequeue method removes the last node via the corresponding reference. OUsing a doubly linked list with references that point to the first and the last nodes respectively, the dequeue method can remove the last node via the corresponding reference. O…
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