diff --git a/main.cpp b/main.cpp
index b237301..13d818d 100644
--- a/main.cpp
+++ b/main.cpp
@@ -24,25 +24,31 @@ input_data() {
     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 > max )
+        {
+            max = x;
+        }
+        if (x < min)
+        {
+            min = x;
+        }
+    }
+}
+
 int main()
 {
     const size_t SCREEN_WIDTH = 80;
     const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
     Input in = input_data();
     vector<size_t> bins(in.bin_count);
-    double min = in.numbers[0];
-    double max = in.numbers[0];
-    for (double x : in.numbers)
-    {
-        if (x < min)
-        {
-            min = x;
-        }
-        else if (x > max)
-        {
-            max = x;
-        }
-    }
+    double min = 0;
+    double max = 0;
+    find_minmax(in.numbers, min, max);
     auto bin_size = (max - min)/in.bin_count;
     for (double number : in.numbers)
     {