!COLLECTIONS-V-MASTER

#include <iostream>
using std::cout;
using std::cin;

#include <string>
using std::string;

#include <vector>
using std::vector;
using std::begin;
using std::end;

#include <algorithm>
using std::sort;
using std::count;

int main()
{
        vector<int> nums;

        for (int i = 0; i < 10; i++)
        {
            nums.push_back(i);
        }

        for (auto item : nums)
        {
            cout << item << " ";
        }
        cout << '\n';

        vector<string> words;

        cout << "enter three words ";
        for (int i = 0; i < 3; i++)
        {
            string s;
            cin >> s;
            words.push_back(s);
        }

        for (auto item : words)
        {
            cout << item << " ";
        }
        cout << '\n';

        cout << "int vector nums has " << nums.size() << " elements." << '\n';

        nums[5] = 3;
        nums[6] = -1;
        nums[1] = 99;

        for (auto item : nums)
        {
            cout << item << " ";
        }
        cout << '\n';

        for (unsigned int i = 0; i < nums.size(); i++)
        {
            cout << nums[i] << " ";
        }
        cout << '\n';

        for (auto i = begin(nums); i != end(nums); i++)
        {
            cout << *i << " ";
        }
        cout << '\n';

        sort(begin(words), end(words));
        for (auto item : words)
        {
            cout << item << " ";
        }
        cout << '\n';

        int threes = count(begin(nums), end(nums), 3);
        cout << "vector of ints has " << threes << " elements with value 3" << '\n';

        int tees = count(begin(words[0]), end(words[0]), 't');
        cout << "first word has " << tees << " letter t's" << '\n';

        return 0;

}