#include using namespace std; struct ListNode { string data; ListNode *next; }; int main() { ListNode *ptr, list; list = new ListNode; list->data = "New York"; ptr - new ListNode; ptr->data - "Boston"; list->next - ptr; ptr->next= new ListNode; ptr->next->data - "Houston"; ptr->next->next = nullptr; // new code goes here Which of the following code correctly deletes the last node the list when added at point of insertion indicated above? O delete ptr->next; ptr->next = nullptr;; O ptr = list: while (ptr != nullptr) ptr = ptr->next; delete ptr; ptr = last; delete ptr; list->next->next = nullptr; delete ptr;

#include using namespace std; struct ListNode { string data; ListNode next; }; int main() { ListNode ptr, list; list = new ListNode; list->data = "New York"; ptr - new ListNode; ptr->data - "Boston"; list->next - ptr; ptr->next= new ListNode; ptr->next->data - "Houston"; ptr->next->next = nullptr; // new code goes here Which of the following code correctly deletes the last node the list when added at point of insertion indicated above? O delete ptr->next; ptr->next = nullptr;; O ptr = list: while (ptr != nullptr) ptr = ptr->next; delete ptr; ptr = last; delete ptr; list->next->next = nullptr; delete ptr;

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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#include <iostream>#include <vector>using namespace std; void PrintVectors(vector<int> numsList) { unsigned int i; for (i = 0; i < numsList.size(); ++i) { cout << numsList.at(i) << " "; } cout << endl;} int main() { vector<int> numsList; int userInput; int i; for (i = 0; i < 3; ++i) { cin >> userInput; numsList.push_back(userInput); } numsList.erase(numsList.begin()+1); numsList.insert(numsList.begin()+1, 102); numsList.insert(numsList.begin()+1, 100); PrintVectors(numsList); return 0;} Not all tests passed clearTesting with inputs: 33 200 10 Output differs. See highlights below. Special character legend Your output 33 100 102 10 Expected output 100 33 102 10 clearTesting with inputs: 6 7 8 Output differs. See highlights below. Special character legend Your output 6 100 102 8 Expected output 100 6 102 8 Not sure what I did wrong but the the 33…