From 2860a5cf81e9ba12c2f8be3423a4d679ae966985 Mon Sep 17 00:00:00 2001
From: KnyazevSK <KnyazevSK@mpei.ru>
Date: Sun, 21 May 2023 23:30:07 +0400
Subject: [PATCH] =?UTF-8?q?build:=20=D0=B2=D1=8B=D0=B4=D0=B5=D0=BB=D0=B5?=
 =?UTF-8?q?=D0=BD=D0=B8=D0=B5=20=D1=84=D1=83=D0=BD=D0=BA=D1=86=D0=B8=D0=B8?=
 =?UTF-8?q?=20make?=
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---
 histogram.cpp | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
 histogram.h   |  6 ++++++
 2 files changed, 60 insertions(+)
 create mode 100644 histogram.cpp
 create mode 100644 histogram.h

diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..5867495
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,54 @@
+#include "histogram.h"
+#include <iostream>
+#include <vector>
+using namespace std;
+
+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;
+        }
+    }
+    return;
+}
+
+vector<size_t> make_histogram (vector<double> numbers, size_t bin_count)
+{
+
+    double min;
+    double max;
+    find_minmax (numbers, min, max);
+    double bin_size = (max - min) / bin_count;
+    vector<size_t> bins(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;
+}
diff --git a/histogram.h b/histogram.h
new file mode 100644
index 0000000..c750551
--- /dev/null
+++ b/histogram.h
@@ -0,0 +1,6 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+#include <vector>
+std::vector<size_t>
+make_histogram(const std::vector<double> numbers, size_t bin_count);
+#endif // HISTOGRAM_H_INCLUDED