CPP

c++ vector average

double avg1(std::vector<int> const& v) {
    return 1.0 * std::accumulate(v.begin(), v.end(), 0LL) / v.size();
}

c++ average vector

float average(std::vector<float> const& v){
    if(v.empty()) return 0;
    auto const count = static_cast<float>(v.size());
    return std::reduce(v.begin(), v.end()) / count;
}