code: заготовка программы

main.cpp

@@ -0,0 +1,117 @@
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+    size_t number_count{};
+    size_t max_count{};
+};
+
+Input
+input_data() {
+    Input in;
+    cerr << "Enter number count: ";
+    cin >> in.number_count;
+
+
+    vector<double> numbers(in.number_count);
+    in.numbers.resize(in.number_count);
+    for (size_t i = 0; i < in.number_count; i++) {
+        cin >> in.numbers[i];
+    }
+
+    size_t bin_count;
+    cerr << "Enter bin count: ";
+    cin >> in.bin_count;
+
+    size_t max_count;
+    in.max_count = 0;
+    return in;
+}
+
+void
+find_minmax(const 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;
+        }
+    }
+}
+
+vector <size_t>
+make_histogram(const vector<double>& numbers, size_t & bin_count, size_t & number_count, size_t & max_count) {
+    double min, max;
+    find_minmax(numbers, min, max);
+    double bin_size = (max - min) / bin_count;
+    vector<size_t> bins(bin_count);
+    max_count = bins[0];
+    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 ((lo <= numbers[i]) && (numbers[i] < hi)){
+                bins[j]++;
+                found = true;
+            }
+            if (bins[j] > max_count){
+                max_count = bins[j];
+            }
+        }
+        if (!found){
+            bins[bin_count - 1]++;
+        }
+        if (bins[bin_count - 1] > max_count){
+            max_count = bins[bin_count - 1];
+        }
+    }
+    return bins;
+}
+
+void
+show_histogram_text(vector<size_t>& bins, size_t & max_count,size_t & bin_count){
+const size_t SCREEN_WIDTH = 80;
+const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+if (max_count > MAX_ASTERISK){
+        vector<size_t> hights(bin_count);
+        for (size_t i = 0; i < bin_count; i++){
+            size_t height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count);
+            hights[i] = height;
+        }
+
+        for (size_t i = 0; i < bin_count; i++){
+            printf("%3d|", bins[i]);
+            for (size_t j = 0; j < hights[i]; j++){
+                cout<<"*";
+            }
+            cout << endl;
+        }
+    }
+    else{
+        for (size_t i = 0; i < bin_count; i++)
+        {
+            printf("%3d|", bins[i]);
+            for (size_t j = 0; j < bins[i]; j++){
+                cout<<"*";
+            }
+            cout << endl;
+        }
+    }
+
+}
+int main()
+{
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
+    show_histogram_text(bins, in.max_count, in.bin_count);
+}