array，vector 的讲解，迭代器讲解_使用反向迭代器求array元素和元素的值

2.array，vector  的讲解
2.1array的详细讲解(静态数组）
#include<iostream>
#include<stdlib.h>
#include<array>
#include<vector>
using namespace std;
void main()
{
	array<int, 5> myint1 = { 1,2,3,4,5 };//创建一维包含5个元素的整形数组
	array<int, 5> myint2 = { 11,12,13,14,15 };//创建一维包含5个元素的整形数组
	array<int, 5> myint3 = { 21,22,23,24,25 };//创建一维包含5个元素的整形数组
	//下面两种是等价的
	array < array<int, 5>, 3 > myint= {myint1, myint2, myint3};  //创建二维数组，其中为3行5列的整形数组
	array < array<int, 5>, 3 > myint = { 1,2,3,4,5,11,12,13,14,15,21,22,23,24,25 };//创建二维数组，其中为3行5列的整形数组
 
    //打印出数组
	for (int i = 0;i < 3;i++)
	{
		for (int j = 0;j < 5;j++)
		{
			cout << myint[i][j] << " ";
		}
		cout << endl;
	}
}
 
 
2.2Vector的详细讲解（动态数组）
2.2.1
void main()
{
	vector<int> myvector;//动态数组
 
	vector<string> string1;//动态字符串数组
	string1.push_back("notepad");
	string1.push_back("cala");
	string1.push_back("mspaint");
	//string1.clear();//清空
	//string1.size();//大小
	for (int i = 0;i < string1.size();i++)
	{
		cout<<string1[i]<<endl;
	}
}
 
2.2.2 迭代器
/************Vector迭代器************/
 
void main()
{
	vector<string> string1;//动态字符串数组
	string1.push_back("notepad");
	string1.push_back("cala");
	string1.push_back("mspaint");
 
	vector<string>::iterator ibegin, iend;  //迭代器
	ibegin = string1.begin(); //数据结构的起始点
	iend = string1.end();  //结束
	for (;ibegin!=iend;ibegin++)
	{
		string tempsrt = *ibegin;//获取指针指向的数据
		system(tempsrt.c_str());//执行指令
	}
}
 
 
 
/************Array迭代器************/
void main()
{
	array <int, 5> myint = { 1,2,3,4,5 };
	array<int, 5> ::iterator ibegin, iend;  正向迭代器
	ibegin = myint.begin();
	iend = myint.end();
	for (;ibegin != iend;ibegin++)
	{
		cout << *ibegin << " " << endl;
	}
 
//********************************/
array<int, 5>::reverse_iterator rbegin, rend;反向迭代器
	rbegin = myint.rbegin();
	rend = myint.rend();
	for (;rbegin != rend;rbegin++)
	{
		cout << *rbegin << " " << endl;
	}
}
 
 
 
 
void main()
{
	vector<int> myvector(5); //分配5个空间
	//增
	myvector.push_back(1);
	myvector.push_back(11);
	myvector.push_back(111);
	myvector.push_back(11111);
	myvector.push_back(2);
 
	myvector.pop_back();//删除最后一个元素
 
	myvector.erase(myvector.begin());//删除第1个
	myvector.erase(myvector.begin()+3);//删除第4个
	myvector.erase(myvector.begin()+5);//删除第6个
	//myvector.clear();//删除所有元素
 
	for (int i=0;i<myvector.size();i++)
	{
		cout << myvector.at(i)<< " " << endl;
	}
}
 
 
 
 
 
 
 
 
 
void main()
{
	vector <int> myvector1;
	myvector1.push_back(1);
	myvector1.push_back(2);
	myvector1.push_back(3);
 
	vector <int> myvector2;
	myvector2.push_back(22);
 
	vector <int> myvector3;
	myvector3.push_back(33);
 
	vector <vector<int>> allvector;
	allvector.push_back(myvector1);
	allvector.push_back(myvector2);
	allvector.push_back(myvector3);
 
	for (int i=0;i<allvector.size();i++)
	{
		for (int j = 0;j < allvector[i].size();j++)
		{
			cout << allvector[i][j]<<" " ;
		}
		cout << endl;
	}
 
}
 
 
 
 
 
 
void main()
{
	array<double, 4> mydouble = { 1,2,3,4 };
/*   利用迭代器
	array<double, 4> ::iterator ibegin, iend;
	ibegin = mydouble.begin();
	iend = mydouble.end();
	for (;ibegin != iend;ibegin++)
	{
		cout <<*ibegin<<" ";
	}
	cout << endl;
 
*/  
使用常规方法
	for (int i=0;i<mydouble.size();i++)
	{
		cout << mydouble[i] << " ";
	}
	cout << endl;
 
	std::cin.get();
}