cs-lab34/text.cpp

#include <iostream>
#include <vector>
#include <cmath>
#include "text.h"
using namespace std;

const size_t SCREEN_WIDTH = 80;
const size_t MAX_ASTERISK = SCREEN_WIDTH - 4;

void
show_histogram_text(const vector<size_t>& bins, size_t bin_count) {
    size_t max_count = bins[0];
    for (size_t i = 0; i < bin_count; i++) {
        if (bins[i] > max_count) {
            max_count = bins[i];
        }
    }

    vector<size_t> height(bin_count);
    for (size_t i = 0; i < bin_count; i++) {
        if (max_count > MAX_ASTERISK) {
            height[i] = round(MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count));
        } else {
            height[i] = bins[i];
        }
    }

    for (size_t i = 0; i < bin_count; i++) {
        if (bins[i] < 10) {
            cout << "  ";
        } else if (bins[i] < 100) {
            cout << " ";
        }
        cout << bins[i] << "| ";

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