0005容器之multiset-526互联

#include <list>
#include<iostream>
#include<vector>
#include<stdexcept>
#include<string>
#include<cstdlib>//abort()
#include<cstdio>//snprintf();整数转字符
#include<ctime>
#include<algorithm>
#include<array>
#include<string>
#include <set>

using namespace std;
#define NUM 1000000

int main()
{

    multiset<string> c;                                                                                                                                                                                          
    char buf[10];
    clock_t timeStart = clock();

    string target = "1999"; 
    for (long i = 0; i < NUM; ++i)
    {   
        snprintf(buf, 10,"%d", rand());
        c.insert(string(buf));
        target = buf;
    }   

    cout << "毫秒: " << (double((clock() - timeStart))/CLOCKS_PER_SEC * 1000 ) << endl;
    cout << "multiset.size() = " << c.size() << endl;
    cout << "multiset.max_size() = " << c.max_size() << endl;

    timeStart = clock();
    auto pItem = ::find(c.begin(),c.end(),target);
    cout << "::find查找结束,毫秒: " << (double((clock() - timeStart))/CLOCKS_PER_SEC * 1000 ) << endl;
    if (pItem != c.end())
    {
        cout << "found: " << *pItem << endl;
    }
    else
    {
        cout << "not found! " << endl;
    }

    timeStart = clock();
    pItem = c.find(target);//比::find()快很多才对
    cout << "mem find 查找结束 毫秒: " << (double((clock() - timeStart))/CLOCKS_PER_SEC * 1000 ) << endl;

    if (pItem != c.end())
    {
        cout << "fonud, " << *pItem << endl;
    }
    else
    {

        cout << "not fonud, " << endl;
    }
}