code: фуннкции для определения значений для построенния гистограммы

histogram.cpp

@@ -0,0 +1,39 @@
+#include "histogram.h"
+#include <vector>
+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<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count)
+{
+	double min, max;
+	find_minmax(numbers, min, max);
+
+	std::vector<size_t> bins(bin_count);
+	double bin_size = (max - min) / bin_count;
+
+	for (double num : numbers) {
+		bool found = false;
+		for (size_t j = 0; j < bin_count - 1 && !found; j++) {
+			double lo = min + j * bin_size;
+			double hi = min + (j + 1) * bin_size;
+			if (lo <= num && num < hi) {
+				bins[j]++;
+				found = true;
+			}
+		}
+		if (!found) {
+			bins[bin_count - 1]++;
+		}
+	}
+	return bins;
+}