C++ //STL---常用算法 //常用遍历 for_each //transform

//STL---常用算法  
//常用遍历 for_each
//transform
#include<iostream>
#include<string>
#include<functional>
#include<algorithm>
#include<vector>

//using namespace std;
using namespace std;
//普通函数
void print01(int val)
{
    cout << val << " ";
}

//仿函数
class print02
{
public:
    void operator()(int val)
    {
        cout << val << " ";
    }
};


void test01()
{
    vector<int>v;
    for (int i = 0; i < 10; i++)
    {
        v.push_back(i);
    }

    for_each(v.begin(), v.end(), print01);
    cout << endl;

    for_each(v.begin(), v.end(), print02());
    cout << endl;
}

//transform
//搬运的
class Transform
{
public:
    int operator()(int v)
    {
        return v + 100;
    }
};

//void print03(int vT)
//{
//    cout << vT << " ";
//}
class print03
{
public:
    void operator()(int val)
    {
        cout << val << " ";
    }
};


void test02()
{
    vector<int>v;
    for (int i = 0; i < 10; i++)
    {
        v.push_back(i);
    }
    cout << "v容器数据:" << endl;

    for_each(v.begin(), v.end(), print03());
    cout << endl;

    //cout << "v容器数据:" << endl;
    //for (vector<int>::iterator it = v.begin(); it != v.end(); it++)
    //{
    //    cout << *it << " ";
    //}
    //cout << endl;


     vector<int>vTarget;   //目标容器
     vTarget.resize(v.size());  //目标容器需要提前开辟空间

    transform(v.begin(), v.end(), vTarget.begin(), Transform());

    cout << "vTarget容器数据:" << endl;
    for_each(vTarget.begin(), vTarget.end(), print03());
    cout << endl;
}
int main()
{
    //test01();
    test02();
    system("pause");
    return 0;
}