Добавлено svg

marks.txt

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+10
+3 3 4 4 4 4 4 5 5 5
+3

svg.cpp

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+#include <iostream>
+#include <vector>
+#include <string>
+#include "svg.h"
+
+using namespace std;
+
+void svg_begin(double width, double height) {
+    cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    cout << "<svg "
+         << "width='" << width << "' "
+         << "height='" << height << "' "
+         << "viewBox='0 0 " << width << " " << height << "' "
+         << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void svg_end() {
+    cout << "</svg>\n";
+}
+
+void svg_text(double left, double baseline, string text) {
+    cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>\n";
+}
+
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black") {
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height
+         << "' stroke='" << stroke << "' fill='" << fill << "' />\n";
+}
+
+void show_histogram_svg(const vector<size_t>& bins) {
+    if (bins.empty()) {
+        cerr << "Error: Empty bins vector\n";
+        return;
+    }
+
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto MAX_WIDTH = IMAGE_WIDTH - TEXT_WIDTH;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    double top = 0;
+    size_t max_count = bins[0];
+    for (size_t bin : bins) {
+        if (max_count < bin) {
+            max_count = bin;
+        }
+    }
+
+    for (size_t bin : bins) {
+        const double bin_width = MAX_WIDTH * (static_cast<double>(bin) / max_count);
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "red");
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}

svg.h

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+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+#include <vector>
+#include <cstddef> // Äëÿ size_t
+
+void show_histogram_svg(const std::vector<size_t>& bins);
+
+#endif // SVG_H_INCLUDED