comp_cost.cpp

#include <iostream>
#include <unordered_map>
#include <vector>
#include <stdint.h>
#include <sys/time.h>

using namespace std;

int main() {

    int x = 0;
    unordered_map<int, int> m;
    vector<int> v;
    v.reserve(10240);
    //uint64_t* z = new uint64_t[10000];
    char* z = new char[10000];

    timeval b, e;
    gettimeofday(&b, NULL);
    for (int i = 0; i < 10000; ++ i)
        //x ++;
        //m[i] = i;
        //v.emplace_back(i);
        //z[i] = i % 191;
        z[i] = i;
    gettimeofday(&e, NULL);

    int diff = (e.tv_usec - b.tv_usec) + (e.tv_sec - b.tv_sec) * 1000000;
    //cout << x << ", cost: " << diff << endl;
    //cout << m.size() << ", cost: " << diff << endl;
    //cout << v.size() << ", cost: " << diff << endl;
    cout << z[100] << ", cost: " << diff << endl;
    delete [] z;

    return 0;
}