cs-lab34/histogram.cpp

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

using namespace std;

// Ðåàëèçàöèÿ find_minmax
void
find_minmax(const vector<double>& numbers, double& min, double& max) {
    if (numbers.empty()) {
        return;
    }

    min = numbers[0];
    max = numbers[0];

    for (double x : numbers) {
        if (x < min) {
            min = x;
        }
        if (x > max) {
            max = x;
        }
    }
}

// Ðåàëèçàöèÿ make_histogram
vector<size_t>
make_histogram(const vector<double>& numbers, size_t bin_count) {
    double min, max;
    find_minmax(numbers, min, max);

    vector<size_t> bins(bin_count);
    double bin_size = (max - min) / bin_count;

    for (double x : numbers) {
        size_t bin_index = 0;
        if (x == max) {
            bin_index = bin_count - 1;
        }
        else {
            bin_index = static_cast<size_t>((x - min) / bin_size);
        }
        bins[bin_index]++;
    }

    return bins;
}