lab3/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;
    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 (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){
    double max,min;
    find_minmax(numbers,min,max);
    double bin_size = (max - min) / bin_count;
        vector<size_t> bins(bin_count);
        for(double x:numbers)
     {
        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 <= x) && (x < hi)) {
            bins[j]++;
            found = true;
        }
    }
    if (!found)
        bins[bin_count-1]++;
    }
    return bins;
}
void show_histogram(vector<size_t> bins,size_t bin_count){
    for(size_t i=0;i<bin_count;i++){
        cout<<bins[i]<<"|";
        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(bins,in.bin_count);

}