cs-lab34/lab34.cpp

#include <iostream>
#include <vector>
#include <cmath>
const size_t WINDOW_WIDTH = 80;
const size_t MAX_VALUE = WINDOW_WIDTH - 3 - 1;
using namespace std;

struct Input{
    vector <double> numbers;
    size_t bin_count = 0;
};

Input
input_data(){
    size_t 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];
    }
    cin >> in.bin_count;
    return in;
}

void
find_minmax(const vector <double> &numbers, double &min, double &max){
    min = numbers[0];
    max = numbers[0];
    for (float now: numbers){
        if (now < min) {min = now;}
        if (now > max) {max = now;}
    }
    return;
}

vector <size_t>
make_histogram(vector <double> numbers, size_t bin_count){
    vector <size_t> bins(bin_count);
    double min = 0, max = 0;
    find_minmax(numbers, min, max);
    double bin_size = (max - min) / bin_count;
    double lo = min, hi = min + bin_size;
    for (size_t i = 0; i < bin_count; i++){
        for (auto now : numbers){
            if (i == bin_count - 1) {
                if ((now >= lo) && (now <= hi)) {bins[i]++;}
            }
            else {
                if ((now >= lo) && (now < hi)) {bins[i]++;}
            }
        }
        lo = hi; hi += bin_size;
    }
    return bins;
}

void show_histogram_text(const vector <size_t> &bins){
    size_t max_count = 0;
    for (auto now: bins)
        {if (now > max_count) {max_count = now;}}
    cout << "mc = " << max_count << endl;
    for (size_t now : bins){
        if (now < 100) {cout << ' ';} if (now < 10) {cout << ' ';}           //ôîðìàòèðîâàíèå ñòðîê
        cout << now << "|";
        int height;
        if (now == max_count) {height = MAX_VALUE * 1.0;}
        else {height = MAX_VALUE * (static_cast <double> (now) / max_count);}
        for (int i = 0; i < round(height); i++) {cout << "*";}
        cout << endl;
    }
}

int
main(){
    double min = 0, max = 0;
    Input in = input_data();
    auto bins = make_histogram(in.numbers, in.bin_count);
    for (auto now: bins) {cout << now << endl;}
    show_histogram_text(bins);
    return 0;
}