cs-lab34/main.cpp

#include <iostream>
#include <vector>

using namespace std;

struct Input
{
    vector<double> numbers;
    size_t bin_count{};
};

Input
input_data()
{
    size_t number_count;
    cin >> number_count;

    Input in;

    in.numbers.resize(number_count);
    for (size_t i = 0; i < number_count; i++)
    {
        cin >> in.numbers[i];
    }
    cin >> in.bin_count;

    return in;
}

void find_minmax(const vector<double>& numbers, double& min, double& max)
{
    min = numbers[0];
    for (auto i = 0; i < numbers.size(); i++)
    {
        if (numbers[i] < min)
        {
            min = numbers[i];
        }
    }

    max = numbers[0];
    for (auto i = 0; i < numbers.size(); i++)
    {
        if (numbers[i] > max)
        {
            max = numbers[i];
        }
    }

}

vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count)
{

    vector<size_t> bins(bin_count);
    vector<size_t> binss(bin_count);

    double max, min;
    find_minmax(numbers, min, max);
    double bin_size = (max / min) / bin_count;

    for (size_t i = 0; i < numbers.size(); i++)
    {
        bool found = false;
        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
        {
            auto lo = min + j * bin_size;
            auto hi = min + (j + 1) * bin_size;
            if ((lo <= numbers[i]) && (numbers[i] < hi))
            {
                bins[j]++;
                found = true;
            }
        }
        if (!found)
        {
            bins[bin_count - 1]++;
        }
    }

    int max_count = bins[0];
    for (size_t i = 0; i < bin_count; i++)
    {
        if (bins[i] > max_count)
        {
            max_count = bins[i];
        }
    }

    if (max_count > 76)
    {

        for (size_t i = 0; i < bin_count; i++)
        {
            int count = bins[i];
            size_t height = 76 * (static_cast<double>(count) / max_count);
            bins[i] = height;
        }
    }

    return bins;
}

void show_histogram_text(vector <size_t> bins, size_t bin_count )
{

    for (size_t i = 0; i < bin_count; i++)
    {
        if (bins[i] < 100)
        {
            cout<< " ";
        }
        if (bins[i] < 10)
        {
            cout<< " ";
        }
        cout<< bins[i]<<"|";
        for (size_t j = 0; j < bins[i]; j++)
        {
            cout<< "*";
        }
        cout<< "\n";
    }
}

int main()
{
    Input in = input_data();
    auto bins = make_histogram(in.numbers, in.bin_count);
    show_histogram_text(bins, in.bin_count);

}