# 2 complex Vector

can you do this for sure and if so how will you start doing i just want make sure you will be able to do it because a lot people here say they can than after i accept the bid before the due date by few hours they say sorry i cant do the assignment it one will be based on array and with size dynamically expanding and shrinking Another one based on linkedlist.
Use a simple vector you created before to create two other more complex vectors with
1) Memory allocation that doubles size of memory when end reached, and 1/2’s memory when the size reaches 1/4.
2) Implemented with a singularly linked list.

Main.cpp
#include <cstdlib>
#include “SimpleVector.h”
//System Libraries
#include <iostream> //Input/Output Library
using namespace std;
//User Libraries
//Global Constants, no Global Variables are allowed
//Math/Physics/Conversions/Higher Dimensions – i.e. PI, e, etc…
//Function Prototypes
void fillVec(SimpleVector<int> &);
void delVec(SimpleVector<int> &);
void prntVec(SimpleVector<int> &,int);
//Execution Begins Here!
int main(int argc, char** argv) {
//Declare Variables
int size;
cout<<“What size vector to test?”<<endl;
cin>>size;
SimpleVector<int> sv(size);
//Initialize or input i.e. set variable values
fillVec(sv);
//Display the outputs
prntVec(sv,10);
//Add and subtract from the vector
//Display the outputs
prntVec(sv,10);
//Add and subtract from the vector
delVec(sv);
//Display the outputs
prntVec(sv,10);
//Exit stage right or left!
return 0;
}
}
}
void delVec(SimpleVector<int> &sv){
int del=sv.size()*0.2;
for(int i=1;i<=del;i++){
sv.pop_front();
sv.pop_back();
}
}
void fillVec(SimpleVector<int> &sv){
for(int i=0;i<sv.size();i++){
sv[i]=i%10;
}
}
void prntVec(SimpleVector<int> &sv,int n){
cout<<endl;
for(int i=0;i<sv.size();i++){
cout<<sv[i]<<” “;
if(i%n==(n-1))cout<<endl;
}
cout<<endl;
}
SimpleVector.h
// SimpleVector class template
#ifndef SIMPLEVECTOR_H
#define SIMPLEVECTOR_H
#include <iostream>
#include <new>       // Needed for bad_alloc exception
#include <cstdlib>   // Needed for the exit function
using namespace std;
template <class T>
class SimpleVector
{
private:
T *aptr;          // To point to the allocated array
int arraySize;    // Number of elements in the array
void memError(); // Handles memory allocation errors
void subError(); // Handles subscripts out of range
public:
// Default constructor
SimpleVector()
{ aptr = 0; arraySize = 0;}
// Constructor declaration
SimpleVector(int);
// Copy constructor declaration
SimpleVector(const SimpleVector &);
// Destructor declaration
~SimpleVector();
//Adding and subtracting from the Vector
void push_front(T);
void push_back(T);
T    pop_front();
T    pop_back();
// Accessor to return the array size
int size() const
{ return arraySize; }
// Accessor to return a specific element
T getElementAt(int position);
T &operator[](const int &);
};
// Constructor for SimpleVector class. Sets the size of the *
// array and allocates memory for it.                       *
template <class T>
SimpleVector<T>::SimpleVector(int s)
{
arraySize = s;
// Allocate memory for the array.
try
{
aptr = new T [s];
}
{
memError();
}
// Initialize the array.
for (int count = 0; count < arraySize; count++)
*(aptr + count) = 0;
}
// Copy Constructor for SimpleVector class. *
template <class T>
SimpleVector<T>::SimpleVector(const SimpleVector &obj)
{
// Copy the array size.
arraySize = obj.arraySize;

// Allocate memory for the array.
aptr = new T [arraySize];
if (aptr == 0)
memError();

// Copy the elements of obj’s array.
for(int count = 0; count < arraySize; count++)
*(aptr + count) = *(obj.aptr + count);
}
// Add 1 or Delete 1 front or back for SimpleVector class. *
template<class T>
void SimpleVector<T>::push_front(T val){
// Allocate memory for the array.
T *newarr = 0;
try
{
newarr = new T [arraySize + 1];
}
{
memError();
}
*(newarr) = val;//Add value to the front of the new array
// Copy previous array contents.
arraySize++;//Increment array size
for (int count = 1; count < arraySize; count++)
*(newarr + count) = *(aptr + count – 1);
delete aptr;//Delete previous array
aptr = newarr;
}
template<class T>
void SimpleVector<T>::push_back(T val){
// Allocate memory for the array.
T *newarr = 0;
try
{
newarr = new T [arraySize + 1];
}
{
memError();
}
// Copy previous array contents.
for (int count = 0; count < arraySize; count++)
*(newarr + count) = *(aptr + count);
*(newarr + arraySize) = val;//Add value at back of the array
arraySize++;//Increment array size
delete aptr;//Delete previous array
aptr = newarr;
}
template<class T>
T SimpleVector<T>::pop_front(){
T dummy = 0;
if(arraySize != 0)//If array is not empty then only pop
{
dummy = *aptr;
if(arraySize == 1){
delete aptr;
aptr = 0;
}
else {
// Allocate memory for the array.
T *newarr = 0;
try {
newarr = new T[arraySize – 1];
}
memError();
}
// Copy previous array contents.
for (int count = 1; count < arraySize; count++)
*(newarr + count – 1) = *(aptr + count);
delete aptr;//Delete previous array
aptr = newarr;
}
arraySize–;//Decrease array size
}
return dummy;//Return popped value
}
template<class T>
T SimpleVector<T>::pop_back(){
T dummy = 0;
if(arraySize != 0)//If array is not empty then only pop
{
dummy = *(aptr + arraySize – 1);
if(arraySize == 1){
delete aptr;
aptr = 0;
}
else {
// Allocate memory for the array.
T *newarr = 0;
try {
newarr = new T[arraySize – 1];
}
memError();
}
// Copy previous array contents.
for (int count = 0; count < arraySize – 1; count++)
*(newarr + count) = *(aptr + count);
delete aptr;//Delete previous array
aptr = newarr;
}
arraySize–;//Decrease array size
}
return dummy;//Return popped value
}
//**************************************
// Destructor for SimpleVector class. *
//**************************************
template <class T>
SimpleVector<T>::~SimpleVector()
{
if (arraySize > 0)
delete [] aptr;
}
// memError function. Displays an error message and
// terminates the program when memory allocation fails.
template <class T>
void SimpleVector<T>::memError()
{
cout << “ERROR:Cannot allocate memory.\n”;
exit(EXIT_FAILURE);
}
// subError function. Displays an error message and         *
// terminates the program when a subscript is out of range. *
template <class T>
void SimpleVector<T>::subError()
{
cout << “ERROR: Subscript out of range.\n”;
exit(EXIT_FAILURE);
}
// getElementAt function. The argument is a subscript. *
// This function returns the value stored at the sub-   *
// cript in the array.                                  *
template <class T>
T SimpleVector<T>::getElementAt(int sub)
{
if (sub < 0 || sub >= arraySize)
subError();
return aptr[sub];
}
// Overloaded [] operator. The argument is a subscript. *
// This function returns a reference to the element     *
// in the array indexed by the subscript.               *
template <class T>
T &SimpleVector<T>::operator[](const int &sub)
{
if (sub < 0 || sub >= arraySize)
subError();
return aptr[sub];
}
#endif

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