#include #include #include using namespace std; struct Input { vector numbers; size_t bin_count{}; }; Input input_data() { size_t number_count; cerr << "Enter 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; sort(begin(in.numbers), end(in.numbers)); in.numbers.erase(unique(begin(in.numbers), end(in.numbers)), end(in.numbers)); number_count = in.numbers.size(); return in; } void find_minmax(const vector& 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 make_histogram(const vector& numbers, size_t& bin_count) { double min = 0; double max = 0; find_minmax(numbers, min, max); double bin_size = (max - min) / bin_count; vector bins(bin_count); for (double number : 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 <= number) && (number < hi)) { bins[j]++; found = true; } } if (!found) { bins[bin_count - 1]++; } } return bins; } void show_histogram_text(const vector& bins, size_t& bin_count) { const size_t SCREEN_WIDTH = 80; const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1; size_t max_count = 0; for (size_t i = 0; i < bin_count; i++) { if (bins[i] > max_count) { max_count = bins[i]; } } double kof = double(MAX_ASTERISK) / max_count; if (kof > 1) { kof = 1; } for (size_t bin : bins) { if (bin < 100) { cout << " "; } if (bin < 10) { cout << " "; } cout << bin << "|"; for (size_t i = 0; i < size_t(bin * kof); i++) { cout << "*"; } cout << endl; } } int main() { auto in = input_data(); auto bins = make_histogram(in.numbers, in.bin_count); show_histogram_text(bins, in.bin_count); }