Первый коммит

.gitignore

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+bin/
+obj/
+*.exe
+*.svg
+*.o
+*.d
+Debug/
+Relause/
+*cbp.layout
+*.depend
+build/

histogram.cpp

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+#include <vector>
+#include <algorithm>
+#include "histogram.h"
+#include "histogram_internal.h"
+#include "histogram_internal.h"
+
+using namespace std;
+
+void find_minmax(const vector<double>& numbers, double& min, double& max) {
+    if (numbers.empty()) {
+        return;
+    }
+
+    min = numbers[0];
+    max = numbers[0];
+
+    for (double number : numbers) {
+        if (number < min) {
+            min = number;
+        }
+        if (number > max) {
+            max = number;
+        }
+    }
+}
+
+vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
+    double min, max;
+    find_minmax(numbers, min, max);
+
+    vector<size_t> bins(bin_count);
+    double bin_size = (max - min) / bin_count;
+
+    for (double number : numbers) {
+        bool found = false;
+        for (size_t i = 0; i < bin_count - 1; i++) {
+            auto lo = min + i * bin_size;
+            auto hi = min + (i + 1) * bin_size;
+            if (lo <= number && number < hi) {
+                bins[i]++;
+                found = true;
+                break;
+            }
+        }
+        if (!found) {
+            bins[bin_count - 1]++;
+        }
+    }
+
+    return bins;
+}

histogram.h

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+#ifndef HISTOGRAM_H
+#define HISTOGRAM_H
+
+#include <vector>
+
+struct Input {
+    std::vector<double> numbers;
+    size_t bin_count{};
+};
+
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
+
+#endif

histogram_internal.h

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+#ifndef HISTOGRAM_INTERNAL_H
+#define HISTOGRAM_INTERNAL_H
+
+#include <vector>
+
+void find_minmax(const std::vector<double>& numbers, double& min, double& max);
+
+#endif

lab03.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="lab03" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/lab03" 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/lab03" 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" />
+			<Add option="-fexceptions" />
+		</Compiler>
+		<Unit filename="main.cpp" />
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

main.cpp

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+#include <iostream>
+#include <vector>
+#include "histogram.h"
+#include "text.h"
+
+using namespace std;
+
+Input input_data();
+
+int main_text() {  // èëè int main() åñëè ýòî àêòèâíàÿ ïðîãðàììà
+    auto input = input_data();
+    auto bins = make_histogram(input.numbers, input.bin_count);
+    show_histogram_text(bins);
+
+    cout << "Press Enter to exit...";
+    cin.ignore();
+    cin.get();
+
+    return 0;
+}
+
+Input input_data() {
+    Input in;
+    size_t number_count = 0;
+
+    cout << "Enter number count: ";
+    cin >> number_count;
+
+    cout << "Enter numbers: ";
+    in.numbers.resize(number_count);
+    for (size_t i = 0; i < number_count; i++) {
+        cin >> in.numbers[i];
+    }
+
+    cout << "Enter bin count: ";
+    cin >> in.bin_count;
+
+    return in;
+}

main_svg.cpp

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+#include <iostream>
+#include <vector>
+#include "histogram.h"
+#include "svg.h"
+
+using namespace std;
+
+Input input_data();
+
+int main() {
+    auto input = input_data();
+    auto bins = make_histogram(input.numbers, input.bin_count);
+    show_histogram_svg(bins);
+    return 0;
+}
+
+Input input_data() {
+    Input in;
+    size_t number_count = 0;
+
+    cin >> number_count;
+    in.numbers.resize(number_count);
+    for (size_t i = 0; i < number_count; i++) {
+        cin >> in.numbers[i];
+    }
+    cin >> in.bin_count;
+
+    return in;
+}

svg.cpp

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+#include <iostream>
+#include <vector>
+#include <string>
+#include <algorithm>
+#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 left, double baseline, const string& text) {
+    cout << "<text x='" << left << "' y='" << baseline << "' "
+         << "font-family='Arial' font-size='12' "
+         << "text-anchor='end' dominant-baseline='middle'>"
+         << text << "</text>\n";
+}
+
+void svg_rect(double x, double y, double width, double height,
+              string stroke, string fill) {
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width
+         << "' height='" << height << "' stroke='" << stroke
+         << "' fill='" << fill << "' stroke-width='1' />\n";
+}
+
+void show_histogram_svg(const vector<size_t>& bins) {
+    const auto IMAGE_WIDTH = 400;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 15;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto MARGIN = 10;
+
+    // Àâòîìàòè÷åñêè ðàññ÷èòûâàåì âûñîòó èçîáðàæåíèÿ
+    const auto IMAGE_HEIGHT = bins.size() * BIN_HEIGHT + 2 * MARGIN;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    // Íàõîäèì ìàêñèìàëüíîå çíà÷åíèå äëÿ ìàñøòàáèðîâàíèÿ
+    size_t max_count = 0;
+    for (size_t count : bins) {
+        if (count > max_count) {
+            max_count = count;
+        }
+    }
+
+    // Ìàñøòàáèðóåì øèðèíó ñòîëáöîâ
+    const double max_width = IMAGE_WIDTH - TEXT_WIDTH - MARGIN;
+
+    double top = MARGIN;
+    for (size_t i = 0; i < bins.size(); i++) {
+        size_t bin = bins[i];
+
+        // Ìàñøòàáèðóåì øèðèíó ñòîëáöà
+        double bin_width = 0;
+        if (max_count > 0) {
+            bin_width = (static_cast<double>(bin) / max_count) * max_width;
+        }
+
+        // Âûâîäèì ïîäïèñü
+        svg_text(TEXT_LEFT, top + BIN_HEIGHT / 2, to_string(bin));
+
+        // Âûáèðàåì öâåò â çàâèñèìîñòè îò çíà÷åíèÿ
+        string fill_color;
+        if (max_count > 0) {
+            double ratio = static_cast<double>(bin) / max_count;
+            if (ratio > 0.8) {
+                fill_color = "#ff4444";
+            } else if (ratio > 0.5) {
+                fill_color = "#ffaa44";
+            } else if (ratio > 0.2) {
+                fill_color = "#44ff44";
+            } else {
+                fill_color = "#4444ff";
+            }
+        } else {
+            fill_color = "#888888";
+        }
+
+        // Âûâîäèì ñòîëáåö
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "#333333", fill_color);
+
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}

svg.h

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+#ifndef SVG_H
+#define SVG_H
+
+#include <vector>
+#include <string>
+
+void svg_begin(double width, double height);
+void svg_end();
+void svg_text(double left, double baseline, const std::string& text);
+void svg_rect(double x, double y, double width, double height,
+              std::string stroke = "black", std::string fill = "black");
+void show_histogram_svg(const std::vector<size_t>& bins);
+
+#endif

text.cpp

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+#include <iostream>
+#include <vector>
+#include "text.h"
+
+using namespace std;
+
+void show_histogram_text(const vector<size_t>& bins) {
+    const size_t screen_width = 80;
+    const size_t max_asterisk = screen_width - 4;
+
+    size_t max_count = 0;
+    for (size_t count : bins) {
+        if (count > max_count) {
+            max_count = count;
+        }
+    }
+
+    for (size_t bin : bins) {
+        if (bin < 100) {
+            cout << ' ';
+        }
+        if (bin < 10) {
+            cout << ' ';
+        }
+        cout << bin << "|";
+
+        size_t height = max_asterisk * (static_cast<double>(bin) / max_count);
+        for (size_t i = 0; i < height; i++) {
+            cout << '*';
+        }
+        cout << '\n';
+    }
+}

text.h

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+#ifndef TEXT_H
+#define TEXT_H
+
+#include <vector>
+
+void show_histogram_text(const std::vector<size_t>& bins);
+
+#endif

unittest.cpp

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+#define RUN_TESTS
+#include <iostream>
+#include <vector>
+#include <cassert>
+#include "histogram_internal.h"
+using namespace std;
+
+void test_find_minmax() {
+    cout << "Testing find_minmax..." << endl;
+
+    // Test 1: distinct positive numbers
+    double min = 0, max = 0;
+    find_minmax({1, 2}, min, max);
+    assert(min == 1);
+    assert(max == 2);
+    cout << "Test 1 passed" << endl;
+
+    // Test 2: single element
+    min = 0; max = 0;
+    find_minmax({5}, min, max);
+    assert(min == 5);
+    assert(max == 5);
+    cout << "Test 2 passed" << endl;
+
+    // Test 3: negative numbers
+    min = 0; max = 0;
+    find_minmax({-1, -2, -3}, min, max);
+    assert(min == -3);
+    assert(max == -1);
+    cout << "Test 3 passed" << endl;
+
+    // Test 4: identical numbers
+    min = 0; max = 0;
+    find_minmax({4, 4, 4}, min, max);
+    assert(min == 4);
+    assert(max == 4);
+    cout << "Test 4 passed" << endl;
+
+    // Test 5: empty vector
+    min = 0; max = 0;
+    find_minmax({}, min, max);
+    cout << "Test 5 passed (should not crash)" << endl;
+
+    cout << "All tests passed!" << endl;
+}
+
+int test_main() {
+    test_find_minmax();
+    return 0;
+}