Родитель
f6bdfa4bf2
Сommit
613c647f38
@ -0,0 +1,35 @@
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#include "histogram.h"
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#include <vector>
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using namespace std;
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static void find_minmax(const vector<double>& numbers, double& min, double& max) {
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if (numbers.empty()) return;
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min = numbers[0];
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max = numbers[0];
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for (double x : numbers) {
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if (x < min) min = x;
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if (x > max) max = x;
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}
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}
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vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
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double min, max;
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find_minmax(numbers, min, max);
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float k = (max - min) / bin_count;
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vector<size_t> bins(bin_count, 0);
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for (double num : numbers) {
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bool flag = false;
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for (size_t j = 0; j < bin_count && !flag; j++) {
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if (num >= (min + k * j) && num < (min + k * (j + 1))) {
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bins[j]++;
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flag = true;
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}
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}
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if (!flag) bins[bin_count - 1]++;
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}
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return bins;
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}
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@ -0,0 +1,9 @@
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#ifndef HISTOGRAM_H_INCLUDED
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#define HISTOGRAM_H_INCLUDED
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#include <vector>
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std::vector<size_t>
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make_histogram(const std::vector<double>& numbers, size_t bin_count);
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#endif // HISTOGRAM_H_INCLUDED
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@ -0,0 +1,33 @@
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#include "text.h"
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#include <iostream>
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#include <vector>
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using namespace std;
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void show_histogram_text(const vector<size_t>& bins) {
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const size_t SCREEN_WIDTH = 80;
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const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
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int max_count = 0;
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for (int count : bins) {
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if (count > max_count) max_count = count;
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}
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for (size_t j = 0; j < bins.size(); j++) {
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if (bins[j] < 100) cout << " ";
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if (bins[j] < 10) cout << " ";
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cout << bins[j] << "|";
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size_t height = bins[j];
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if (max_count > MAX_ASTERISK) {
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if (max_count != bins[j]) {
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height = static_cast<size_t>(MAX_ASTERISK * (static_cast<float>(bins[j]) / max_count));
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}
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else if (max_count == bins[j]) {
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height = MAX_ASTERISK;
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}
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}
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for (size_t i = 0; i < height; i++) cout << "*";
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cout << "\n";
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}
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}
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@ -0,0 +1,9 @@
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#ifndef TEXT_H_INCLUDED
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#define TEXT_H_INCLUDED
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#include <vector>
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void show_histogram_text(const std::vector<size_t>& bins);
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#endif // TEXT_H_INCLUDED
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