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 - 3 - 1;

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


    size_t bin_count;
    cerr << "Enter bin count: ";
    cin  >> bin_count;
    vector<size_t> bins(bin_count, 0);

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

    return 0;
}