финальная версия

histogram.cpp

@@ -0,0 +1,51 @@
+#pragma once
+
+#include <iostream>
+#include <vector>
+
+#include "histogram.h"
+
+using namespace std;
+
+
+
+void find_minmax(vector <double> numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (int i = 0; i < numbers.size(); i++){
+        if (numbers[i] < min)
+                    min = numbers[i];
+        if (numbers[i] > max)
+                    max = numbers[i];
+
+
+}
+}
+
+vector<size_t> make_histogram(  vector<double> numbers,  size_t bin_count){
+vector<size_t> bins(bin_count);
+
+double min,max;
+
+find_minmax( numbers, min, max);
+
+double bin_size = (max - min) / 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 +1,9 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+#include <vector>
+
+std:: vector<size_t> make_histogram(std::vector<double> numbers,  size_t bin_count);
+
+
+
+#endif // HISTOGRAM_H_INCLUDED

svg.cpp

@@ -0,0 +1,63 @@
+#pragma once
+
+#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 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, string fill){
+     cout << "<rect x=' " << x << "' y=' "<< y <<" ' width=' " << width <<" ' height=' " << height <<
+      " ' stroke=' red' fill=' #ffeeee'/>";
+}
+
+void show_histogram_svg( 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;
+    const size_t MAX_ASTERISK = IMAGE_WIDTH - TEXT_WIDTH;
+    int maxb = bins[0];
+    for (size_t j = 0; j < bins.size(); j++){
+        if (bins[j] > maxb) maxb = bins[j];
+    }
+    cout <<"                         " << maxb<< "            ";
+
+    for (size_t i = 0; i < bins.size(); i++) {
+            double bin_width;
+            if (maxb == bins[i] ){
+            bin_width = MAX_ASTERISK ;
+            }
+            else {
+               bin_width = MAX_ASTERISK * bins[i] / maxb;
+            }
+               svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bins[i]));
+               svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,  "blue", "#aaffaa");
+               top += BIN_HEIGHT;
+    }
+    svg_end();
+}

svg.h

@@ -0,0 +1,7 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <vector>
+
+void show_histogram_svg(std:: vector<size_t>& bins);
+
+#endif // SVG_H_INCLUDED

text.cpp

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <iostream>
+#include <vector>
+
+#include "text.h"
+
+using namespace std;
+
+void show_histogram_text (vector<size_t> bins, size_t bin_count ){
+int i;
+
+int r[20];
+r[0]=0;
+for (i = 0; i <  bin_count; i++){
+        r[i+1]= /*r[i]+ */ bins[i];
+}
+int maxbin=0;
+for (size_t i = 0; i <  bin_count; i++){
+       if ( r[i+1] > maxbin) maxbin = r[i+1] ;
+}
+float k=1;
+//k = 76.00 / maxbin;
+for (size_t i = 0; i <  bin_count; i++){
+        if (r[i+1]<10) cout << " ";
+        if (r[i+1]<100) cout << " ";
+         cout << r[i+1] << "|";
+         for (size_t j = 0; j <k*(r[i+1]); j++) {
+                cout << "*" ;
+         }
+         cout << endl;
+}
+}

text.h

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