hash.cpp

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

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

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;
}