C++类模板实战之vector容器的实现

#pragma once
#include<iOStream>
using namespace std;
template<class T>
class Arrays
{
private:
    T* arr;//数组arr存放T类型的数据
    int capacity;//数组容量
    int size;//数组大小
public:
    Arrays(int capacity)
    {
        this->capacity = capacity;
        this->size = 0;
        this->arr = new T[this->capacity];
    }
    ~Arrays()
    {
        if (this->arr != NULL)
        {
            delete []this->arr;
            this->arr = NULL;
        }
    }
};

    Arrays(const Arrays& p)
    {
        this->capacity = p.capacity;
        this->size = p.size;
        this->arr = new T[p.capacity];
        for (int i = 0; i < this->size; i++)
        {
            this->arr[i] = p.arr[i];
        }
    }

    Arrays& operator=(const Arrays& p)
    {
        if (this->arr!=NULL)
        {
            delete []this->arr;
            this->arr = NULL;
            this->capacity = 0;
            this->size = 0;
        }
        //深拷贝过程
        this->capacity = p.capacity;
        this->size = p.size;
        this->arr = new T[this->capacity];
        for (int i = 0; i < p.size; i++)
        {
            this->arr[i] = p.arr[i];
        }
        return *this;
    }

    void insert_Arrays(const T&value)
    {
        if (this->capacity == this->size)
        {
            return;
        }
        this->arr[size] = value;
        this->size++;
    }
    void delete_Arrays()
    {
        if (this->size == 0)
        {
            return;
        }
        this->size--;
    }

    T& operator[](int index)
    {
        return this->arr[index];
    }

    int getSize()
    {
        return this->size;
    }
    int getCapacity()
    {
        return this->capacity;
    }

#include"arrays.hpp"
class Hero
{
    friend void printHero(Arrays<Hero>&hero);
private:
    string name;
    string position;
public:
    Hero() {}
    Hero(string name, string position)
    {
        this->name = name;
        this->position = position;
    }
};
void printArrays(Arrays<int>arr)
{
    for (int i = 0; i < arr.getSize(); i++)
    {
        cout << arr[i] << " ";
    }
    cout << endl;
}
void printHero(Arrays<Hero>&hero)
{
    for (int i = 0; i < hero.getSize(); i++)
    {
        cout << "姓名："<<hero[i].name<<" 位置："<<hero[i].position<<endl;
    }
}
void test()
{
    cout << "普通类型数组测试：" << endl;
    cout << "输入数组容量为：" ;
    int n = 0; cin >> n;
    Arrays<int> array(n);
    cout << "输入数据：";
    for (int i = 0; i < array.getCapacity(); i++)
    {
        int value = 0;
        cin >> value;
        array.insert_Arrays(value);
    }
    cout << "打印数组信息："<<endl;
    printArrays(array);
    array.delete_Arrays();
    cout << "删除一次尾部数据后打印数组信息：" << endl;
    printArrays(array);
}
void test1()
{
    cout << "自定义类型数组测试：" << endl;
    Hero h1("火舞","中单");
    Hero h2("韩信","打野");
    Hero h3("桑启","游走");
    Hero h4("守约","发育");
    Hero h5("关羽","对抗");
    Arrays<Hero> array(5);
    array.insert_Arrays(h1);
    array.insert_Arrays(h2);
    array.insert_Arrays(h3);
    array.insert_Arrays(h4);
    array.insert_Arrays(h5);
    printHero(array);
    array.delete_Arrays();
    cout << "删除一次尾部数据后打印数组信息："<<endl;
    printHero(array);
}