#include "stats.h"
#include <vector>
#include <algorithm>

double med(std::vector<double> &scores,bool ignoreExtremes) {
    const auto len = scores.size() - (ignoreExtremes && scores.size() > 2) ? 2 : 0;
    sort(scores.begin(), scores.end());
    using vec_size = std::vector<double>::size_type;
    const vec_size middle = (vec_size) (len / 2);
    if (middle%2 == 1)
        return scores[middle];
    else
        return (scores[middle - 1] + scores[middle]) / 2.0;
}

double avg(const std::vector<double> &scores,bool ignoreExtremes) {
    auto sum = 0.0;
    using vec_size = std::vector<double>::size_type;
    for (vec_size i = (ignoreExtremes && scores.size() > 2) ? 1 : 0; i < scores.size() - (ignoreExtremes && scores.size() > 2) ? 1 : 0; i++) sum += scores[i];
    return sum / static_cast<double>(scores.size() - (ignoreExtremes && scores.size() > 2) ? 2 : 0);
}