Assume that we have a node structure that contains a pointer field named next for linking to another node structure of the same kind and a chain of one or more nodes has been created with the head node pointed by the pointer variable named head. Let cur be a helper pointer variable that is used to point to a node structure. Which is the correct code snippet for making cur point to the last node in the chain. O None of these. cur = nullptr; while (cur->next != nullptr) { cur->next = cur; cur = head; while (cur->next != nullptr) { cur = cur->next; cur = head; while (cur != nullptr) { cur = cur->next; }

Assume that we have a node structure that contains a pointer field named next for linking to another node structure of the same kind and a chain of one or more nodes has been created with the head node pointed by the pointer variable named head. Let cur be a helper pointer variable that is used to point to a node structure. Which is the correct code snippet for making cur point to the last node in the chain. O None of these. cur = nullptr; while (cur->next != nullptr) { cur->next = cur; cur = head; while (cur->next != nullptr) { cur = cur->next; cur = head; while (cur != nullptr) { cur = cur->next; }

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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Concept explainers

A potential method of analysis

The complexity of the algorithm model emphasizes the potential method. This method is useful for examining a data structure's amortized time and space complexity.

Question

Assume that we have a node structure that contains a pointer field named next for linking to another
node structure of the same kind and a chain of one or more nodes has been created with the head
node pointed by the pointer variable named head. Let cur be a helper pointer variable that is used to
point to a node structure. Which is the correct code snippet for making cur point to the last node in
the chain.
O None of these.
cur =
nullptr;
while (cur->next != nullptr) {
cur->next = cur;
}
cur =
head;
while (cur->next != nullptr) {
cur = cur- >next;
}
head;
while (cur != nullptr) {
cur =
cur = cur->next;
}

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