code: исходный код

main.cpp

@@ -0,0 +1,87 @@
+#include <iostream>
+#include <vector>
+#include <math.h>
+
+using namespace std;
+
+int main()
+{
+    size_t number_count;
+    cerr << "Enter number count:";
+    cin >> number_count;
+    vector<double> numbers(number_count);
+    cerr << "Enter numbers";
+    for (size_t i = 0; i < number_count; i++)
+        cin >> numbers[i];
+    size_t bin_count;
+    cerr << "Enter bin count:";
+    cin >> bin_count;
+    if (bin_count == 0)
+    {
+        bin_count = sqrt(number_count);
+        if (bin_count > 25)
+        {
+            bin_count = 1 + log2(number_count);
+            cout << "After Sturges rule bin count is:" << bin_count << endl;
+        }
+        else
+            cout << "After Empirical rule bin count is:" << bin_count << endl;
+    }
+
+    vector <size_t> bins(bin_count, 0);
+    double min = numbers[0];
+    double max = numbers[0];
+
+    for (double number : numbers)
+    {
+        if (min > number)
+            min = number;
+        else if (max < number)
+            max = number;
+    }
+
+    double bin_size = (max - min) / bin_count;
+    for (size_t i = 0; i < number_count; 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 ((numbers[i] >= lo) && (numbers[i] < hi))
+            {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found)
+        {
+            bins[bin_count - 1]++;
+        }
+    }
+
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+    size_t max_bin = bins[0];
+    for (size_t bin : bins)
+        if (bin > max_bin)
+            max_bin = bin;
+    for (size_t bin : bins)
+    {
+        int height = bin;
+        if (max_bin > MAX_ASTERISK)
+        {
+            height = MAX_ASTERISK * (static_cast<double>(bin) / max_bin);
+        }
+        if (bin < 100)
+            cout << " ";
+        if (bin < 10)
+            cout << " ";
+        cout << bin << "|";
+        for (size_t i = 0; i < height; i++)
+            cout << "*";
+        cout << endl;
+    }
+    return 0;
+}