dynamic array for any object.

[avansc]

this is not the best solution, has memory leaks and may not be fast. its just a quick and dirty solution.

Code: Select all

//main.cpp

#include "defs.h"

int main(int argc, char * const argv[])
{
	cDynamicArray *list = new cDynamicArray(10);
	
	for(int a = 0;a < 22;a++)
	{
		list->addItem(new cData(a+1));
	}
	
    list->printList();
	list->printBounds();
	
    return 0;
}

Code: Select all

//cDynamicArray.h/cpp

/*
 *  cDynamicArray.h
 *  binreadwrite
 *
 *  Created by avansc on 7/24/09.
 *  Copyright 2009 BrOkEnBiT. All rights reserved.
 *
 */

#include "defs.h"

#ifndef _cDynamicArray_h
#define _cDynamicArray_h

class cDynamicArray
{
public:
	cDynamicArray(int size);
	~cDynamicArray();
	void addItem(cData *item);
	cData *pGetItemAt(int index);
	void grow();
	void printList();
	void printBounds();
private:
	cData **ppArray;
	int size;
	int count;
};

#endif

/*
 *  cDynamicArray.cpp
 *  binreadwrite
 *
 *  Created by avansc on 7/24/09.
 *  Copyright 2009 BrOkEnBiT. All rights reserved.
 *
 */

#include "defs.h"

cDynamicArray::cDynamicArray(int size)
{
	this->size = size;
	this->count = 0;
	this->ppArray = (cData**)malloc(sizeof(cData*)*size);
}

cDynamicArray::~cDynamicArray()
{
	
}

void cDynamicArray::addItem(cData *item)
{
	this->ppArray[this->count] = item;
	this->count++;
	if(this->count == this->size)
	{
		this->grow();
	}
}

cData *cDynamicArray::pGetItemAt(int index)
{
	if(index >= count)
		return NULL;
	return this->ppArray[index];
}

void cDynamicArray::grow()
{
	cData **TppArray = (cData**)malloc(sizeof(cData*)*this->size*2);
	for(int a = 0;a < this->count;a++)
	{
		TppArray[a] = this->ppArray[a];
	}
	
	this->ppArray = TppArray;
	this->size *=2;	
}

void cDynamicArray::printList()
{
	for(int a = 0;a < this->count;a++)
	{
		printf("%d\n", this->ppArray[a]->getNumber());
	}
}

void cDynamicArray::printBounds()
{
	printf("Array Size = %d\n", this->size);
	printf("Index Size = %d\n", this->count);
}

Code: Select all

//cData.h/cpp

/*
 *  cData.h
 *  binreadwrite
 *
 *  Created by avansc on 7/24/09.
 *  Copyright 2009 BrOkEnBiT. All rights reserved.
 *
 */

#ifndef _cData_h
#define _cData_h

class cData
{
public:
	cData(int number);
	~cData();
	void setNumber(int number);
	int getNumber();
private:
	int number;
};

#endif

/*
 *  cData.cpp
 *  binreadwrite
 *
 *  Created by avansc on 7/24/09.
 *  Copyright 2009 BrOkEnBiT. All rights reserved.
 *
 */

#include "defs.h"

cData::cData(int number)
{
	this->number = number;	
}

cData::~cData()
{
	
}

void cData::setNumber(int number)
{
	this->number = number;
}

int cData::getNumber()
{
	return this->number;
}