3 stage

text.cpp

@@ -0,0 +1,43 @@
+#include "text.h"
+
+using namespace std;
+
+void show_histogram_text(const 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 max_count = bins[0];
+    for (size_t i = 0; i < bin_count; i++)
+    {
+        if (bins[i] > max_count) {
+            max_count = bins[i];
+        }
+    }
+
+    for (size_t i = 0; i < bin_count; i++)
+    {
+        if (bins[i]<10) {
+            cout << "  " << bins[i] << "|";
+            }
+        else if (bins[i]<100) {
+            cout << " " << bins[i] << "|";
+        }
+        else if (bins[i]<1000) {
+            cout << bins[i] << "|";
+        }
+
+        size_t height;
+
+        if (max_count<=MAX_ASTERISK) {
+            height = bins[i];
+        }
+        else {
+            height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
+        }
+
+        for (size_t j = 0; j < height; j++) {
+            cout << "*";
+        }
+        cout << endl;
+    }
+}