#include <vector>
#include "histogram.hpp"

using namespace std;

bool find_minmax(const vector<double>& numbers, double& minimum, double& maximum){
    if (numbers.size() == 0) return 1;
    minimum = numbers[0];
    maximum = numbers[0];
    for (auto i : numbers) {
        if (i < minimum) minimum = i;
        if (i > maximum) maximum = i;
    }
    return 0;
}

vector<size_t> make_histogram(const vector<double>& numbers, size_t& bin_count) {
    vector<size_t> baskets(bin_count);
    double basket_max;
    double basket_min;
    double basket_size;
    
    find_minmax(numbers, basket_min, basket_max);
    basket_size = (basket_max - basket_min) / bin_count;
    for (auto i = 0; i < bin_count; i++) {
        for (auto j = 0; j < numbers.size(); j++) {
            if ((numbers[j] >= (basket_min + i * basket_size) and numbers[j] < (basket_min + (i + 1) * basket_size)) or (i == bin_count - 1 and numbers[j] == basket_max)) {
                baskets[i]++;
            }
        }
    }
    return baskets;
}