vector-swap

////////////////////////////////////////
//      2018/04/22 7:37:29
//      vector-swap
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

template<class T>
class Print
{
public:
    void operator()(T& t){
        cout << t << " ";
    }
};

//==================
int main(){
    int ary[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
    Print<int> print;

    vector<int> v1(ary, ary + 7);
    vector<int> v2(ary + 7, ary + 10);

    cout << "Vector v1:";
    for_each(v1.begin(),v1.end(), print);
    cout << endl;
    cout << "Size of v1 = " << v1.size() << endl << endl;

    cout << "Vector v2:";
    for_each(v2.begin(), v2.end(), print);
    cout << endl;
    cout << "Size of v2 = " << v2.size() << endl << endl;

    v1.swap(v2);

    cout << "After swaping:" << endl;
    cout << "Vector v1:";
    for_each(v1.begin(),v1.end(),print);
    cout << endl;
    cout << "Size of v1 = " << v1.size() << endl << endl;

    cout << "Vector v2:";
    for_each(v2.begin(), v2.end(),print);
    cout << endl;
    cout << "Size of v2 = " << v2.size() << endl;

    return 0;
}

/*
OUTPUT:
    Vector v1:1 2 3 4 5 6 7
    Size of v1 = 7

    Vector v2:8 9 10
    Size of v2 = 3

    After swaping:
    Vector v1:8 9 10
    Size of v1 = 3

    Vector v2:1 2 3 4 5 6 7
    Size of v2 = 7
*/