cs-lab34/main.cpp

#include <iostream>
#include <vector>

using namespace std;

int main()
{
    size_t number_count,bin_count;
    const size_t SCREEN_WIDTH = 80;
    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;

    cerr << "Enter number count: ";
    cin >> number_count;



    vector<double> numbers(number_count);
    for (int i = 0; i < number_count; i++)
    {
        cerr << "Number[" << i << "]=";
        cin >> numbers[i];
    }
    cerr << "Enter bin count: ";
    cin >> bin_count;

    vector<size_t> bins(bin_count);

    double min = numbers[0];
    double max = numbers[0];
    for (double x : numbers)
    {
        if (x < min)
        {
            min = x;
        }
        else if (x > max)
        {
            max = x;
        }
    }

    double bin_size = (max - min) / bin_count;

    for (size_t i = 0; i < number_count; 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]++;
        }
    }

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

    for(size_t i = 0; i < bin_count; i++)
    {
        if(bins[i]<10)
        {
            cout<< "  " << bins[i] << "|";
        }
        else
        {
            if(bins[i]<100)
            {
                cout<< " " << bins[i] << "|";
            }
            else
            {
                if(bins[i]<1000)
                {
                    cout<< bins[i] << "|";
                }

            }
        }

        size_t height;
        if(max_bin_count <= MAX_ASTERISK)
        {
            height = bins[i];
        }
        else
        {
            height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_bin_count);
        }
        for(size_t j = 0; j < height;  j ++)
        {
            cout<<"*";
        }
        cout<<endl;
    }
    return 0;
}