code: проверка на нулевой массив

.gitignore

@@ -1,2 +1,4 @@
 /bin
 /obj
+/lab03.depend
+/unittest.depend

histogram.cpp

@@ -0,0 +1,60 @@
+#include "histogram.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+bool find_minmax( vector<double> numbers, double &min, double &max)
+{
+    if (numbers.empty())
+    {
+        return false;
+    }
+
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
+    {
+        max = x;
+        if (x < min)
+        {
+            min = x;
+        }
+        else if (x > max)
+        {
+            max = x;
+        }
+    }
+    return true;
+}
+
+vector<size_t> make_histogram (vector<double> numbers, size_t bin_count)
+{
+
+    double min;
+    double max;
+    find_minmax (numbers, min, max);
+    double bin_size = (max - min) / bin_count;
+    vector<size_t> bins(bin_count);
+
+    for (size_t i = 0; i < numbers.size(); i++)
+    {
+        bool found = false;
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
+        {
+            auto lo = min + j * bin_size;
+            auto hi = min + (j + 1) * bin_size;
+            if ((lo <= numbers[i]) && (numbers[i] < hi))
+            {
+                bins[j]++;
+                found = true;
+            }
+        }
+
+        if (!found)
+        {
+            bins[bin_count - 1]++;
+        }
+    }
+
+    return bins;
+}

histogram.h

@@ -0,0 +1,6 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+#include <vector>
+std::vector<size_t>
+make_histogram(const std::vector<double> numbers, size_t bin_count);
+#endif // HISTOGRAM_H_INCLUDED

main.cpp

@@ -1,6 +1,9 @@
 #include <iostream>
 #include <vector>
 #include <conio.h>
+#include "histogram.h"
+#include "text.h"
+#include "swg.h"
 
 using namespace std;
 
@@ -25,112 +28,13 @@ Input input_data()
     cin >> in.bin_count;
     return in;
 }
-void find_minmax(const vector<double> &numbers, double &min, double &max)
-{
-    min = numbers[0];
-    max = numbers[0];
-       for (double x : numbers)
-    {
-        if (x < min)
-        {
-            min = x;
-        }
-        else if (x > max)
-        {
-            max = x;
-        }
-    }
-    return;
-}
-
-vector<size_t> make_histogram (vector<double> numbers, size_t bin_count)
-{
-
-    double min;
-    double max;
-    find_minmax (numbers, min, max);
-    double bin_size = (max - min) / bin_count;
-    vector<size_t> bins(bin_count);
-
-    for (size_t i = 0; i < numbers.size(); i++)
-    {
-        bool found = false;
-        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
-        {
-            auto lo = min + j * bin_size;
-            auto hi = min + (j + 1) * bin_size;
-            if ((lo <= numbers[i]) && (numbers[i] < hi))
-            {
-                bins[j]++;
-                found = true;
-            }
-        }
-
-        if (!found)
-        {
-            bins[bin_count - 1]++;
-        }
-    }
-
-    return bins;
-}
-
-void show_histogram_text(vector<size_t> bins, size_t bin_count)
-{
-    const size_t screen_width = 80;
-    const size_t max_asterisk = screen_width - 3 - 1;
-    size_t i,j;
-    double max_count;
-    max_count = bins[0];
-    for (i=0; i< bin_count; i++)
-    {
-        if (max_count<bins[i])
-        {
-            max_count=bins[i];
-        }
-    }
-
-    size_t height;
-    bool flag = false;
-    if(max_count>max_asterisk)
-    {
-        flag=true;
-    }
-    for (j = 0; j < bin_count; j++)
-    {
-        if (bins[j] < 100)
-        {
-            cout << " ";
-        }
-        if (bins[j] < 10)
-        {
-            cout << " ";
-        }
-        cout << bins[j] << "|";
-
-        if (flag)
-        {
-            height = max_asterisk * (static_cast<double>(bins[j]) / max_count);
-        }
-        else
-        {
-            height=bins[j];
-        }
-        for (i = 0; i < height; i++)
-        {
-            cout << "*";
-        }
-        cout << endl;
-    }
-}
 
 
 int main()
 {
     auto in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.bin_count);
-    getch();
+    show_histogram_svg(bins);
     return 0;
 }
 

svg.cpp

@@ -0,0 +1,88 @@
+#include <math.h>
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include <string>
+#include "swg.h"
+#include "sr.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, 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 = "black")
+{
+    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;
+    const auto BLACK = "black";
+    const auto RED = "red";
+    const auto GREEN = "green";
+    const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
+
+    size_t x = sr(bins);
+
+    svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
+
+    double top = 0;
+    double max_count = bins[0];
+    for (size_t i = 0; i < bins.size(); i++)
+    {
+        if (max_count<bins[i])
+        {
+            max_count=bins[i];
+        }
+    }
+
+
+    for (size_t bin : bins)
+    {
+        double bin_width = (MAX_WIDTH)*(bin/max_count);
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        if (bin_width<=MAX_WIDTH/max_count*x)
+        {
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, GREEN);
+        }
+        else{
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, RED);
+            }
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}

swg.h

@@ -0,0 +1,8 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <vector>
+
+void
+show_histogram_svg(const std::vector<size_t>& bins);
+
+#endif // SVG_H_INCLUDED

text.cpp

@@ -0,0 +1,53 @@
+#include <iostream>
+#include <vector>
+#include "text.h"
+using namespace std;
+
+void show_histogram_text(vector<size_t> bins, size_t bin_count)
+{
+    const size_t screen_width = 80;
+    const size_t max_asterisk = screen_width - 3 - 1;
+    size_t i,j;
+    double max_count;
+    max_count = bins[0];
+    for (i=0; i< bin_count; i++)
+    {
+        if (max_count<bins[i])
+        {
+            max_count=bins[i];
+        }
+    }
+
+    size_t height;
+    bool flag = false;
+    if(max_count>max_asterisk)
+    {
+        flag=true;
+    }
+    for (j = 0; j < bin_count; j++)
+    {
+        if (bins[j] < 100)
+        {
+            cout << " ";
+        }
+        if (bins[j] < 10)
+        {
+            cout << " ";
+        }
+        cout << bins[j] << "|";
+
+        if (flag)
+        {
+            height = max_asterisk * (static_cast<double>(bins[j]) / max_count);
+        }
+        else
+        {
+            height=bins[j];
+        }
+        for (i = 0; i < height; i++)
+        {
+            cout << "*";
+        }
+        cout << endl;
+    }
+}

text.h

@@ -0,0 +1,7 @@
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
+
+void
+show_histogram_text(std::vector<size_t> bins, size_t bin_count);
+
+#endif // TEXT_H_INCLUDED

unittest.cbp

@@ -0,0 +1,38 @@
+<?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

@@ -0,0 +1,49 @@
+#define DOCTEST_CONFIG_NO_MULTITHREADING
+#define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#include "doctest.h"
+#include "histogram_internal.h"
+#include "sr.h"
+
+
+TEST_CASE("distinct positive numbers") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+TEST_CASE("distinct positive numbers 2") {
+    double min = 0;
+    double max = 0;
+    std::vector<double>v{2,1};
+    CHECK(v.size() != 0);
+    CHECK(v.size() != 1);
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+    CHECK(min != max);
+}
+
+TEST_CASE("vector with one element") {
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+
+TEST_CASE("vector with same elements") {
+    double min = 0;
+    double max = 0;
+    find_minmax({2,2,2}, min, max);
+    CHECK(min == 2);
+    CHECK(max == 2);
+}
+TEST_CASE("Empty vector"){
+    double min = 0;
+    double max = 0;
+    std::vector<double> numbers {};
+    CHECK(find_minmax(numbers, min, max) == false);
+
+}
+