hash.cpp

//
// Created by light on 19-12-16.
//


#include <algorithm>   // std::sort
#include <functional>  // std::less/greater/hash
#include <iostream>    // std::cout/endl
#include <string>      // std::string
#include <vector>      // std::vector
#include "../container1/output_container.h"

using namespace std;

int main()
{
    //  初始数组
    vector<int> v{13, 6, 4, 11, 29};
    cout << v << endl;

    //  从小到大排序
    sort(v.begin(), v.end());
    cout << v << endl;

    //  从大到小排序
    sort(v.begin(), v.end(),
         greater<int>());
    cout << v << endl;

    cout << hex;

    auto hp = hash<int*>();
    cout << "hash(nullptr)  = "
         << hp(nullptr) << endl;
    cout << "hash(v.data()) = "
         << hp(v.data()) << endl;
    cout << "v.data()       = "
         << static_cast<void*>(v.data())
         << endl;

    auto hs = hash<string>();
    cout << "hash(\"hello\")  = "
         << hs(string("hello")) << endl;
    cout << "hash(\"hellp\")  = "
         << hs(string("hellp")) << endl;
}