Vector Exercises

main.cpp

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

void print_vector(vector<string> values) {
    for (int i = 0; i < values.size(); ++i) {
        cout << values.at(i) << endl;
    }
}

vector<string> reversed(vector<string> values) {
    vector<string> new_vector;
    for (int i = values.size() - 1; i >= 0; --i) {
        new_vector.push_back(values.at(i));
    }

    return new_vector;
}

void reverse_inplace(vector<string> & values) {
    for (int i = 0; i < values.size() / 2; ++i) {
        swap(values.at(i), values.at(values.size() - i - 1));
    }
}

int main() {
    vector<string> values;
    values.push_back("first");
    values.push_back("second");
    values.push_back("third");
    values.push_back("fourth");
    values.push_back("fifth");

    cout << "--NORMAL--" << endl;

    print_vector(values);

    cout << "--REVERSED--" << endl;

    print_vector(reversed(values));

    cout << "--REVERSED INPLACE--" << endl;

    reverse_inplace(values);
    print_vector(values);

    return 0;
}