diff --git a/histogram.cpp b/histogram.cpp
new file mode 100644
index 0000000..44583e6
--- /dev/null
+++ b/histogram.cpp
@@ -0,0 +1,38 @@
+#include "histogram.h"
+#include <vector>
+
+static 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){
+    std::vector<size_t> bins(bin_count);
+    double min = 0;
+    double max = 0;
+    find_minmax(numbers, min, max);
+    double bin_size = (max - min) / 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;
+    }