#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
    vector<int> vec;

    vec.push_back(3);
    vec.push_back(6);
    vec.push_back(9);
    vec.push_back(9);

    // Using the iterator directly
    cout << "iterator demo..." << endl;
    for (vector<int>::iterator i = vec.begin(); i != vec.end(); i++) {
        cout << *i << endl;
    }

    // find() algorithm demo
    cout << "find demo..." << endl;
    vector<int>::iterator find6 = find(vec.begin(), vec.end(), 6);
    cout << *find6 << endl;   // will print "6"

    // count() algorithm demo
    cout << "count() demo..." << endl;
    int count9 = count(vec.begin(), vec.end(), 9);
    cout << count9 << endl;   // should print "2"

    return 0;
}