СПРИНТ № 2 | Шаблоны функции | Урок 2: Вычисляем term frequencies

#include <iostream>
#include <map>
#include <string>
#include <vector>

using namespace std;

map<string, int> ComputeTermFreqs(const vector<string>& terms) {
    map<string, int>freq_doc;

    for(const auto& term: terms){
        freq_doc[term]++;
    }
    return freq_doc;
}

int main() {
    const vector<string> terms = {"first"s, "time"s, "first"s, "class"s};
    for (const auto& [term, freq] : ComputeTermFreqs(terms)) {
        cout << term << " x "s << freq << endl;
    }
    // вывод:
    // class x 1
    // first x 2
    // time x 1
}