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histogram.cpp

@@ -0,0 +1,52 @@
+#include <iostream>
+#include <vector>
+#include "histogram.h"
+
+//std::vector<size_t>
+
+void
+find_minmax(const std::vector<double> numbers, double& min, double& max)
+{
+/*/double/*/ min = numbers[0];//ïîèñê ìèí è ìàêñ
+/*/ double/*/ max = numbers[0];
+for (double 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)
+{
+std::vector <size_t> bins(bin_count);
+double min, max;
+find_minmax(numbers, min, max);
+double bin_size = (max-min)/bin_count;//ðàçìåð êîðçèíû
+
+for (size_t i = 0; i < numbers.size(); i++)//çàïîëíåíèå
+{
+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 +1,9 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+
+#include <vector>
+
+#endif // HISTOGRAM_H_INCLUDED
+
+
+

histogram_internal.h

@@ -0,0 +1,7 @@
+#ifndef HISTOGRAM_INTERNAL_H_INCLUDED
+#define HISTOGRAM_INTERNAL_H_INCLUDED
+
+void find_minmax(const std::vector<double> numbers, double& min, double& max);
+
+#endif // HISTOGRAM_INTERNAL_H_INCLUDED
+

svg.cpp

@@ -0,0 +1,25 @@
+#include <iostream>
+#include <vector>
+#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
+show_histogram_svg(const vector<size_t> &bins) {
+    svg_begin(400, 300);
+    svg_end();
+}

svg.h

@@ -0,0 +1,7 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+void
+svg_begin(double width, double height)
+
+#endif // SVG_H_INCLUDED

text.cpp

@@ -0,0 +1,67 @@
+#include <iostream>
+#include <vector>
+#include "text.h"
+
+using namespace std;
+
+void
+show_histogram_text(vector<size_t> bins, size_t bin_count)
+{
+
+    size_t max_count=0;
+    for (size_t i =0; i<bin_count; i++)
+    {
+        if (max_count <bins[i])
+        {
+            max_count=bins[i];
+        }
+    }
+
+
+
+    float procent;
+    for(size_t i=0; i<bin_count; i++)
+    {
+
+
+
+        int procent =(float)bins[i];
+
+
+        if (procent<10)
+        {
+            cout<<"  "<<procent<<" | ";
+        }
+        if ((procent<100)&&(procent>=10))
+        {
+            cout<<" "<<procent<<" | ";
+        }
+
+
+        size_t height = 0;
+
+        if (max_count>76)
+        {
+            size_t height = 76 * (static_cast<double>(bins[i]) / max_count);
+            for(size_t j=0; j<=height; j++)
+            {
+
+                cout<<"*";
+            }
+        }
+        else
+        {
+            for(size_t j=0; j<=bins[i]-1; j++)
+            {
+
+                cout<<"*";
+            }
+        }
+
+
+
+        cout<<endl;
+    }
+
+return;
+}

text.h

@@ -0,0 +1,8 @@
+#ifndef TEXT_H_INCLUDED
+#define TEXT_H_INCLUDED
+
+std::vector<size_t>
+void
+show_histogram_text(std::vector<size_t> bins, size_t bin_count);
+
+#endif // TEXT_H_INCLUDED

unittest.cpp

@@ -0,0 +1,39 @@
+#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;
+    find_minmax({1, 2}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 2);
+}
+TEST_CASE("vector 1 element")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({1}, min, max);
+    CHECK(min == 1);
+    CHECK(max == 1);
+}
+TEST_CASE("distinct negativ numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({-1, -2}, min, max);
+    CHECK(min == -2);
+    CHECK(max == -1);
+}
+TEST_CASE("distinct positive numbers")
+{
+    double min = 0;
+    double max = 0;
+    find_minmax({2, 2}, min, max);
+    CHECK(min == 2);
+    CHECK(max == 2);
+}
+
+
+