cs-lab034/main.cpp

#include <iostream>
#include <vector>
#include "histogram.h"
#include "histogram.cpp"


using namespace std;

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

Input
input_data() {
    Input in;

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

    in.numbers.resize(number_count);
    for (size_t i = 0; i < number_count; i++) {
        cin >> in.numbers[i];
    }

    cerr << "Enter number bin: ";
    cin >> in.bin_count;

    return in;
}


void
show_histogram_text(const vector<size_t>& bins) {
    const size_t SCREEN_WIDTH = 80;
    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;

    size_t max_count = bins[0];
    for (size_t i = 0; i < bins.size(); i++) {
        if (bins[i] > max_count) {
            max_count = bins[i];
        }
    }

    for (size_t i = 0; i < bins.size(); 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 * (bins[i] * 1.0 / max_count);
        }

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

int
main() {
    Input in = input_data();

    double min, max;
    find_minmax(in.numbers, min, max);

    auto bins = make_histogram(in.numbers, in.bin_count, min, max);
    show_histogram_text(bins);

    return 0;
}