program1-template/Vector.cpp at master · bucs220/program1-template · GitHub

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#include "Star.h"
#include "Planet.h"
#include "Vector.h"
#include <iostream>

Vector::Vector(){
	vec_size = 0;
	vec_planets = NULL;
}

Vector::~Vector(){
	for(int i = 0; i< vec_size; i++)
		delete vec_planets[i];

	delete [] vec_planets;
	vec_planets = NULL;
}

void Vector::insert(int index, Planet * new_planet){
	if(vec_size < index){
		Planet ** temp_vec = new Planet*[index+1];
		for(int i = 0; i < index; i++){
			temp_vec[i] = NULL;
			if(i < vec_size)
				temp_vec[i] = vec_planets[i];
		}

		temp_vec[index] = new_planet;

		delete [] vec_planets;
		vec_planets = NULL;
		vec_planets = temp_vec;
		vec_size = index + 1;
	}
	else{
		Planet ** temp_vec = new Planet*[vec_size+1];
		for(int i = 0; i < vec_size + 1; i++){
			temp_vec[i] = NULL;
			if(i < vec_size)
				temp_vec[i] = vec_planets[i];
		}
		temp_vec[index] = new_planet;
		if(temp_vec[vec_size] == NULL){
			temp_vec[vec_size] = temp_vec[vec_size - 1];
			temp_vec[vec_size - 1] = NULL;
		}

		delete [] vec_planets;
		vec_planets = NULL;
		vec_planets = temp_vec;
		vec_size = vec_size + 1;

	}
}

Planet * Vector::read(int index){
	if(index > vec_size)
		return NULL;

	else if(vec_planets[index] == NULL)
		return NULL;

	return vec_planets[index];
}

bool Vector::remove(int index){
	if(index < vec_size){
		Planet * temp_planet;
		temp_planet = vec_planets[index];
		Planet ** temp_vec = new Planet*[vec_size-1];
		int j = 0;
		for(int i = 0; i < vec_size; i++){
			if(index != i){
				temp_vec[j] = vec_planets[i];
				j++;
			}
		}
	delete temp_planet;

	delete [] vec_planets;
	vec_planets = NULL;
	vec_planets = temp_vec;
	vec_size = vec_size - 1;

	return true;
	}

	return false;
}