Add find_minmax and make_histogram in histogram.cpp

Histogram/histogram.cpp

@@ -1 +1,42 @@
+#include "histogram.h"
+#include <vector>
+#include <algorithm>
+
+size_t find_minmax(const std::vector<double>& numbers, double& min, double& max) {
+    if (numbers.empty()) {
+        min = max = 0;
+        return 0;
+    }
+    min = numbers[0];
+    max = numbers[0];
+    for (double number : numbers) {
+        if (number < min) {
+            min = number;
+        }
+        if (number > max) {
+            max = number;
+        }
+    }
+    return 0;
+}
+std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count) {
+    std::vector<size_t> bins(bin_count, 0);
+    if (numbers.empty() || bin_count == 0) {
+        return bins;
+    }
+    double min, max;
+    find_minmax(numbers, min, max);
+    if (max == min) {
+        return bins; // Âîçâðàùàåì ïóñòûå êîðçèíû, òàê êàê ãèñòîãðàììà íå ìîæåò áûòü ïîñòðîåíà
+    }
+    double bin_width = (max - min) / bin_count;
+    for (double number : numbers) {
+        size_t bin_index = static_cast<size_t>((number - min) / bin_width);
+        if (bin_index >= bin_count) {
+            bin_index = bin_count - 1; // Îáðàáîòêà êðàéíåãî ñëó÷àÿ max == number
+        }
+        bins[bin_index]++;
+    }
+    return bins;
+};