code: добавлены сами файлы

histogram.cpp

@@ -0,0 +1,48 @@
+#include "histogram.h"
+#include <vector>
+
+static void find_minmax(const std::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;
+        }
+    }
+}
+
+std::vector<std::size_t> make_histogram(const std::vector<double> &numbers, size_t bin_count)
+{
+    double min = numbers[0];
+    double max = numbers[0];
+    find_minmax(numbers, min, max);
+    double bin_size = ( max - min ) / bin_count;
+
+    std::vector<std::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 +1,10 @@
+#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

text.cpp

@@ -0,0 +1,65 @@
+#include "text.h"
+#include <iostream>
+#include <vector>
+
+const std::size_t SCREEN_WIDTH = 80;
+const std::size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+void show_histogram_text(const std::vector<std::size_t> &bins)
+{
+    std::size_t maxbin = bins[0];
+    for (std::size_t i=1; i < bins.size(); i++)
+    {
+        if (maxbin < bins[i])
+        {
+            maxbin = bins[i];
+        }
+    }
+    if (maxbin <= MAX_ASTERISK)
+    {
+        for (size_t i=0; i < bins.size(); i++ )
+        {
+            if (bins[i] < 10 )
+            {
+                std::cout << "  " << bins[i] << "|";
+            }
+            else if (bins[i] < 100)
+            {
+                std::cout << " " << bins[i] << "|";
+            }
+            else if (bins[i] < 1000)
+            {
+                std::cout << bins[i] << "|";
+            }
+            for (size_t j=0; j < bins[i]; j++ )
+            {
+                std::cout << "*";
+            }
+            std::cout << std::endl;
+        }
+    }
+    else
+    {
+        for (std::size_t i=0; i < bins.size(); i++)
+        {
+            std::size_t heightG= MAX_ASTERISK * (static_cast<double>(bins[i]) / maxbin);
+            if (bins[i] < 10 )
+            {
+                std::cout << "  " << bins[i] << "|";
+            }
+            else if (bins[i] < 100)
+            {
+                std::cout << " " << bins[i] << "|";
+            }
+            else if (bins[i] < 1000)
+            {
+                std::cout << bins[i] << "|";
+            }
+            for (std::size_t j=0; j < heightG; j++ )
+            {
+                std::cout << "*";
+            }
+            std::cout << std::endl;
+        }
+    }
+}

text.h

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