code:свг формат

histogram_internal.h

@@ -0,0 +1,8 @@
+#ifndef HISTOGRAM_INTERNAL_H_INCLUDED
+#define HISTOGRAM_INTERNAL_H_INCLUDED
+#include <vector>
+
+bool
+find_minmax(const std::vector<double>& numbers, double& min, double& max);
+
+#endif // HISTOGRAM_INTERNAL_H_INCLUDED

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 ";
+    cout << "width='" << width << "' ";
+    cout << "height='" << height << "' ";
+    cout << "viewBox='0 0 " << width << " " << height << "' ";
+    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end() {
+    cout << "</svg>\n";
+}
+
+void
+svg_text(double TEXT_LEFT, double BASELINE, string text) {
+        cout << "<text x='" << TEXT_LEFT << "' y='"<< BASELINE <<"'> " << text << "</text>";
+
+}
+
+
+void svg_rect(double TEXT_WIDTH, double top, double bin_width, double BIN_HEIGHT){
+    cout << "<rect x='"<<TEXT_WIDTH<<"' y='"<<top<<"' width='"<<bin_width<<"' height='"<<BIN_HEIGHT<<"' stroke ='cyan' fill='#fce166' />\n";
+}
+
+void
+show_histogram_svg(const vector<size_t>& bins) {
+    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 BLOCK_WIDTH = 10;
+
+    const double SCALE = IMAGE_WIDTH - TEXT_WIDTH;
+
+    double max_count = 0;
+    for (double x: bins) {
+        if (x > max_count) {
+                max_count = x;
+        }
+    }
+
+    svg_begin(800,300);
+
+       double top = 0;
+    for (size_t i = 0; i < bins.size(); i++) {
+        const double bin_width = SCALE * ( bins[i] / max_count);
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bins[i]));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+        top += BIN_HEIGHT;
+        cout << endl;
+        cout << bin_width;
+    }
+
+
+
+    svg_end();
+
+}

svg.h

@@ -0,0 +1,15 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+void
+svg_begin(double width, double height);
+
+void
+svg_end();
+
+void
+show_histogram_svg(const std::vector<size_t>& bins);
+
+
+
+#endif // SVG_H_INCLUDED

unittest.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="unittest" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/unittest" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/unittest" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+		</Compiler>
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

unittest.cpp

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+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    std::vector<double>test = {0};
+    bool flag;
+
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+
+    find_minmax({-1, -2, -3, -4, -5}, min, max);
+    CHECK(min == -5);
+    CHECK(max == -1);
+
+    CHECK(!find_minmax({}, min, max));
+    CHECK(true);
+    }