code: добавлен исправленный вариант общего кода

lab34/histogram.cpp

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+#include "histogram.h"
+#include <vector>
+#include <stdlib.h>
+#include <iostream>
+
+void
+find_minmax(const std::vector<double>& numbers, double& min, double& max, bool& res){
+    if (numbers.size() == 0){
+        res = false;
+        return;
+    }
+    min = numbers[0];
+    max = numbers[0];
+    for (auto x : numbers) {
+        if (x < min) {
+            min = x;
+        }
+        else if (x > max) {
+            max = x;
+        }
+    }
+}
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t bin_count){
+    double min, max;
+    bool res = true;
+    find_minmax (numbers, min, max, res);
+    if (res == false){
+        std::cerr << "Number of elements cannot be equal to zero";
+        exit(1);
+    }
+    double bin_size = (max - min) / bin_count;
+    std::vector<size_t> bins(bin_count);
+    for (auto x : numbers) {
+        bool found = false;
+        for (size_t j = 0; (j < bin_count - 1) && !found ; j++) {
+            if ((min + j * bin_size <= x) && (x < min + (j + 1) * bin_size)) {
+                bins[j] += 1;
+                found = true;
+            }
+        }
+        if (!found) bins[bin_count - 1]++;
+    }
+    return bins;
+}

lab34/histogram.h

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+#pragma once
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t bin_count);
+

lab34/lab34.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="lab34" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/lab34" 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/lab34" 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>
+		<Unit filename="histogram.cpp" />
+		<Unit filename="histogram.h" />
+		<Unit filename="main.cpp" />
+		<Unit filename="svg.cpp" />
+		<Unit filename="svg.h" />
+		<Unit filename="text.cpp" />
+		<Unit filename="text.h" />
+		<Extensions />
+	</Project>
+</CodeBlocks_project_file>

lab34/main.cpp

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

lab34/svg.cpp

@@ -0,0 +1,61 @@
+#include "svg.h"
+#include <vector>
+#include <iostream>
+
+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, string text) {
+    cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
+}
+
+void
+svg_rect(double x, double y, double width, double height,
+              string stroke = "black", string fill = "orange"){
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << "'/>";
+}
+
+
+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;
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double top = 0;
+    double maxbin = bins[0];
+    for (size_t bin : bins) {
+        if (maxbin < bin){
+            maxbin = bin;
+        }
+    }
+    for (size_t bin : bins) {
+        double bin_width = BLOCK_WIDTH * bin;
+        if ((IMAGE_WIDTH - TEXT_WIDTH) < (bin * BLOCK_WIDTH)){
+            bin_width = (IMAGE_WIDTH - TEXT_WIDTH) * ( bin / maxbin );
+        }
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}

lab34/svg.h

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+#pragma once
+#include <vector>
+
+void
+show_histogram_svg(const std::vector<size_t>& bins);

lab34/text.cpp

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+#include "text.h"
+#include <vector>
+#include <iostream>
+
+using namespace std;
+
+const size_t SCREEN_WIDTH = 80;
+const size_t MAX_LENGTH = SCREEN_WIDTH - 3 - 1;
+
+void
+show_histogram_text(vector<size_t> bins, size_t bin_count ){
+    auto max_count = bins[0];
+    for (auto x : bins) {
+        if (x > max_count) {
+            max_count = x;
+        }
+    }
+    for (size_t i = 0; i < bin_count; i++) {
+        size_t j = 100;
+        while (bins[i] < j) {
+            cout << " ";
+            j /= 10;
+        }
+        cout << bins[i] << "|";
+        if (max_count > MAX_LENGTH) {
+            auto count = bins[i];
+            size_t height = MAX_LENGTH * (static_cast<double>(count) / max_count);
+            j = 0;
+            while (j < height) {
+                cout << "*";
+                j++;
+            }
+        }
+        else {
+           j = 0;
+           while (j < bins[i]) {
+                cout << "*";
+                j++;
+            }
+        }
+        cout << endl;
+    }
+}

lab34/text.h

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+#pragma once
+#include <vector>
+
+void
+show_histogram_text(std::vector<size_t> bins, size_t bin_count );