1:14Donelearn.ejust.org1 JUSTLearnGiven the doubly linked list in figure 3, what is the necessary code to insert a new node with info=2 before thefirst node with info=4? Suppose that we already created and instantiated the new node, and the pointernewNode points to itFigure 3: Doubly linked listfirst12lastcount 4a. first->back=newNode; newNode->next=first: first=newNode:Ob. first-newNode: first->nextenewNode: newNode->back firstOc first=newNode: first->back=newNode; newNode->next=firstO d. first->next=newNode; newNode-back=first firstenewNode:Clear my choiceConsider the following empty circular Queue with count = 0. What is the contents of this queue after doingPsMore

back refers to left side address and next represents right node address

Given the doubly linked list in figure 3, what is the necessary code to insert a new node with info=2 before the first node with info=4? Suppose that we already created and instantiated the new node, and the pointer newNode points to it

Given the doubly linked list in figure 3, what is the necessary code to insert a new node with info=2 before the first node with info=4? Suppose that we already created and instantiated the new node, and the pointer newNode points to it

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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Operations of Linked List

A linked lists are one of the most widely used and effective data structures, with applications in every programming language, including C, C++, Python, Java, and C#.

Question

1:14
Done
learn.ejust.org
1 JUSTLearn
Given the doubly linked list in figure 3, what is the necessary code to insert a new node with info=2 before the
first node with info=4? Suppose that we already created and instantiated the new node, and the pointer
newNode points to it
Figure 3: Doubly linked list
first
12
last
count 4
a. first->back=newNode; newNode->next=first: first=newNode:
Ob. first-newNode: first->nextenewNode: newNode->back first
Oc first=newNode: first->back=newNode; newNode->next=first
O d. first->next=newNode; newNode-back=first firstenewNode:
Clear my choice
Consider the following empty circular Queue with count = 0. What is the contents of this queue after doing
Ps
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Assume that the nodes of the singly linked lists are arranged in decreasing order of the exponents of the variable x in order to add the two polynomials.The objective is to create a fresh list of nodes that represents the addition of P1 and P2. This is done by adding the COEFF fields of nodes in lists P1 and P2 that have identical powers of variable x, and then making a new node in the resulting list P1 + P2. The key part of the technique is shown below.The start pointers of the singly linked lists that correspond to the polynomials P1 and P2 are P1 and P2, respectively. Two temporary pointers, PTR1 and PTR2, are created with starting values of P1 and P2, respectively. Make procedural code.
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