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;
    cerr << "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];
    }
    cerr << "Enter bin_count: ";
    cin >> in.bin_count;
    return in;
}
void
find_minmax(const vector<double>& numbers, double& min, double& max) {
    min = numbers[0];
    max = numbers[0];
    for(double x : numbers){
        if(x<min){
            min=x;
        }
        if(x>max){
            max=x;
        }
    }
}
vector<size_t>
make_histogram(const vector<double>& numbers,size_t bin_count){
    vector<size_t> bins(bin_count);
    double min,max;
    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]++;
        }
    }
    return bins;
}
void
show_histogram(vector<size_t>bins,size_t bin_count){
    size_t Maxbins = 0;
    for (size_t i = 0; i < bin_count; i++)
    {
        if (bins[i] > Maxbins)
        {
            Maxbins = bins[i];
        }
    }
    const size_t MAX_HEIGHT = 76;
    if (Maxbins <= MAX_HEIGHT)
    {
        for (size_t i = 0; i < bin_count; i++)
        {
            if (bins[i] < 10)
            {
                cout << " ";
            }
            cout << " " << bins[i]<< "|";
            for (size_t j = 0; j < bins[i]; j++)
            {
                cout << "*";
            }
            cout << endl;
        }
    }
    else
    {
        for (size_t i = 0; i < bin_count; i++)
        {
            size_t height = static_cast<size_t>(MAX_HEIGHT * (static_cast<double>(bins[i]) / Maxbins));

            if (bins[i] < 100)
            {
                cout << " ";
            }
            if (bins[i] < 10)
            {
                cout << " ";
            }
            cout << bins[i] << "|";
            for (size_t j = 0; j < height; j++)
            {
                cout << "*";
            }
            cout << endl;
        }
    }
}
int
main() {
    auto in = input_data();
    auto bins = make_histogram(in.numbers, in.bin_count);
    show_histogram(bins,in.bin_count);
    return 0;
}