diff --git a/histogram.cpp b/histogram.cpp
index fe12cab..6a509c2 100644
--- a/histogram.cpp
+++ b/histogram.cpp
@@ -1,13 +1,13 @@
-
 #include "histogram.h"
 #include "histogram_internal.h"
+#include <iostream>
 #include <vector>
-
 using namespace std;
 
 bool find_minmax(const vector<double>& numbers, double& min, double& max) {
-    if (numbers.empty())
+    if (numbers.empty()) {
         return false;
+    }
     min = numbers[0];
     max = numbers[0];
     for (double x : numbers) {
@@ -16,7 +16,7 @@ bool find_minmax(const vector<double>& numbers, double& min, double& max) {
         if (x > max)
             max = x;
     }
-    return true;
+    return false;
 }
 
 vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
@@ -27,6 +27,7 @@ vector<size_t> make_histogram(const vector<double>& numbers, size_t 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++) {
             double lo = min + j * bin_size;
             double hi = min + (j + 1) * bin_size;
@@ -35,15 +36,9 @@ vector<size_t> make_histogram(const vector<double>& numbers, size_t bin_count) {
                 found = true;
             }
         }
+
         if (!found)
             bins[bin_count - 1]++;
     }
     return bins;
 }
-
-double compute_bin_size(const std::vector<double>& numbers, size_t bin_count) {
-    double min, max;
-    if (!find_minmax(numbers, min, max))
-        return 0.0;
-    return (max - min) / bin_count;
-}