Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- #include #include using std::cout; using std::vector; class StatSet { private: HCreate a vector of doubles that is called "numbers." public: //Nothing to do in the constructor. StatSet() } // Add a new number to the set. vòid add_num(double num) { } double mean() { //Sum up the values and return the average. double sum = 0; //Write a loop that would iterate through the vector. sum += numbers[i]; return sum / numbers.size(); } double median() //Before calculating the median, we must sort the //array.arrow_forward#include <iostream>#include <list>#include <string>#include <cstdlib>using namespace std;int main(){int myints[] = {};list<int> l, l1 (myints, myints + sizeof(myints) / sizeof(int));list<int>::iterator it;int choice, item;while (1){cout<<"\n---------------------"<<endl;cout<<"***List Implementation***"<<endl;cout<<"\n---------------------"<<endl;cout<<"1.Insert Element at the Front"<<endl;cout<<"2.Insert Element at the End"<<endl;cout<<"3.Front Element of List"<<endl;cout<<"4.Last Element of the List"<<endl;cout<<"5.Size of the List"<<endl;cout<<"6.Display Forward List"<<endl;cout<<"7.Exit"<<endl;cout<<"Enter your Choice: ";cin>>choice;switch(choice){case 1:cout<<"Enter value to be inserted at the front: ";cin>>item;l.push_front(item);break;case 2:cout<<"Enter value to be inserted at the end:…arrow_forwardC++ Data Structure:Create an AVL Tree C++ class that works similarly to std::map, but does NOT use std::map. In the PRIVATE section, any members or methods may be modified in any way. Standard pointers or unique pointers may be used.** MUST use given Template below: #ifndef avltree_h#define avltree_h #include <memory> template <typename Key, typename Value=Key> class AVL_Tree { public: classNode { private: Key k; Value v; int bf; //balace factor std::unique_ptr<Node> left_, right_; Node(const Key& key) : k(key), bf(0) {} Node(const Key& key, const Value& value) : k(key), v(value), bf(0) {} public: Node *left() { return left_.get(); } Node *right() { return right_.get(); } const Key& key() const { return k; } const Value& value() const { return v; } const int balance_factor() const {…arrow_forward
- Student* func () { unique ptr arr[] make_unique ("CSC340") }; // #1 Insert Code int main () ( // #2 Insert Code [ #1 Insert Code]: Write code to keep all the object(s) which element(s) of array arr owns alive outside of the scope of func. [#2 Insert Code]: Write code to have a weak_ptr monitor the object which survived; Then test if it has any owner; Then properly destroy it; Then test again if has any owner; Then destroy the Control Block.arrow_forwardcomplete the //TODOs #include<iostream> #include "swap.h" using namespace std; int main(int argc, char const *argv[]) { intfoo[5] = {1, 2, 3, 4, 5}; cout<<"Addresses of elements:"<<endl; //TODO Print the addresses of array elements cout<<endl; cout<<"Elements:"<<endl;; //TODO Print all the elements using pointers cout<<endl; inta,b; intf; intflag = 1; while(flag == 1){ cout<<"Enter indices of elements you want to swap?"<<endl; cout<<"First index"<<endl; cin>>a; cout<<"Second index"<<endl; cin>>b; cout<<"Enter 0 for pass-by-value, 1 for pass-by-pointer"<<endl; cin>>f; switch (f) { case0: // Pass by Value // Compare the resultant array with the array you get after passing by pointer cout<<"Before swapping"<<endl; for(inti = 0;i<5;i++){ cout<<foo[i]<<" "; } cout<<endl; swap(foo[a],foo[b]); cout<<"\nAfter swapping"<<endl;…arrow_forwardplease help me with codingarrow_forward
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