cs-lab34/main.cpp

#include <iostream>
#include <vector>
using namespace std;

int main()
{
    const size_t SCREEN_WIDTH = 80;
    const size_t MAX_ASTERISK = SCREEN_WIDTH - 6 - 1;
    size_t bin_count, counts;
    cerr << "Enter counts:";
    cin >> counts;

    vector <double> numbers(counts);

    for (size_t i = 0; i < counts; i++){
        cerr << "Enter array "<< i <<" number:";
        cin >> numbers[i];
    }

    cerr << "Enter bin_count:";
    cin >> bin_count;

    double minN = numbers[0], maxN = numbers[0];

    for (double x: numbers){
        if (minN > x){
            minN = x;
        }
        if (maxN < x){
            maxN = x;
        }
    }

    double diff = (maxN - minN) / bin_count;

    vector <size_t> bins(bin_count);

    size_t max_count = 0;
    for (size_t i = 0; i < counts; i++){
        bool found = false;
        for (size_t j = 0;(j < bin_count - 1) && !found; j++){
            auto lo = minN + j * diff;
            auto hi = minN + (j + 1) * diff;
            if ((lo <= numbers[i]) && (hi > numbers[i])){
                bins[j]++;
                if (bins[j] > max_count){
                    max_count = bins[j];
                }
                found = true;
            }
        }
        if(!found){
            bins[bin_count - 1]++;
            if (bins[bin_count - 1] > max_count){
                    max_count = bins[bin_count - 1];
            }
        }
    }

    bool scaling = false;

    if (max_count > MAX_ASTERISK){
        scaling = true;
    }

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

        size_t number_of_stars = bins[i];

        if (scaling){
            if (bins[i] == max_count){
                number_of_stars = MAX_ASTERISK * 1.0;
            }
            else {
                number_of_stars = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
            }
        }

        for (size_t j = 0; j < number_of_stars; j++){
            cout << "*";
        }
        cout << endl;

        if (i < bin_count - 1){
            cout << minN + (i + 1) * diff << endl;
        }
    }
}