cs-lab34/main.cpp

#include <iostream>
#include <vector>

using namespace std;

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

Input input_data() {
    //ââîä êîëè÷åñòâà ÷èñåë
    size_t number_count;
    cerr << "Enter number count: ";
    cin >> number_count;
    //ïåðåìåííàÿ-ýêçåìïëÿð
    Input in;
    //ââîä ÷èñåë
    in.numbers.resize(number_count);
    for (size_t i = 0 ; i < number_count ; i++) {
        cin >> in.numbers[i];
    }
    //ââîä êîëè÷åñòâà êîðçèí
    cerr << "Enter bin count: ";
    cin >> in.bin_count;
    return in;
}

   //îïðåäåëåíèå íàèáîëüøåãî è ìèíèìàëüíîãî ÷èñëà
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;
        }
        else 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);
    //ðàçíèöà ìåæäó ãðàíèöàìè
    double bin_size = (max - min) / bin_count;
    //ðàñïðåäåëåíèå ÷èñåë ïî êîðçèíàì
    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_text(const vector<size_t> &bins){
    //ïîèñê ìàêñèìàëüíîãî êîëè÷åñòâà ÷èñåë â êîðçèíå
    size_t max_count = 0;
    for (double x : bins){
        if (x > max_count){
            max_count = x;
        }
    }
    //êîíñòàíòû äëÿ ìàñøòàáèðîâàíèÿ
    const size_t SCREEN_WIDTH = 80;
    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
    //âûâîä
    for (size_t i = 0;i < bins.size();i++){
        if (bins[i] < 100){
            cout << " ";
        }
        if (bins[i] < 10){
            cout << " ";
        }
        cout << bins[i] << "|";
        if (max_count > MAX_ASTERISK){
            size_t height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
            for (size_t j = 0;j < height;j++){
                cout << "*";
            }
        }
        else{
            for (size_t j = 0;j < bins[i];j++){
                cout << "*";
            }
        }
        cout << endl;
     }
}

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