#include #include using namespace std; const size_t SCREEN_WIDTH = 80; const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1; 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); cerr << "Enter numbers: "; for (size_t i = 0; i < number_count; i++) { cin >> in.numbers[i]; } cerr << "Enter bin count: "; cin >> in.bin_count; 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; } if (x > max) { max = x; } } } vector make_histogram(const vector& numbers, size_t bin_count) { double min, max; find_minmax(numbers, min, max); vector bins(bin_count, 0); double bin_size = (max - min) / bin_count; for (double number : numbers) { size_t bin_index = bin_count - 1; // default to last bin if (number < max) { bin_index = static_cast((number - min) / bin_size); } bins[bin_index]++; } return bins; } void show_histogram_text(const vector& bins) { size_t max_count = bins[0]; for (size_t x : bins) { if (x > max_count) { max_count = x; } } if (max_count > MAX_ASTERISK) { for (size_t count : bins) { size_t height = MAX_ASTERISK * (static_cast(count) / max_count); if (count < 10) { cout << " " << count << "|"; } else if (count < 100) { cout << " " << count << "|"; } else { cout << count << "|"; } for (size_t i = 0; i < height; i++) { cout << "*"; } cout << "\n"; } } else { for (size_t x : bins) { if (x < 10) { cout << " " << x << "|"; } else if (x < 100) { cout << " " << x << "|"; } else { cout << x << "|"; } for (size_t i = 0; i < x; i++) { cout << "*"; } cout << "\n"; } } } int main() { auto in = input_data(); auto bins = make_histogram(in.numbers, in.bin_count); show_histogram_text(bins); return 0; }