code: проверка на нулевой массив

histogram.cpp

@@ -3,12 +3,18 @@
 #include <vector>
 using namespace std;
 
-void find_minmax( vector<double> numbers, double &min, double &max)
+bool find_minmax( vector<double> numbers, double &min, double &max)
 {
+    if (numbers.empty())
+    {
+        return false;
+    }
+
     min = numbers[0];
     max = numbers[0];
-       for (double x : numbers)
+    for (double x : numbers)
     {
+        max = x;
         if (x < min)
         {
             min = x;
@@ -18,7 +24,7 @@ void find_minmax( vector<double> numbers, double &min, double &max)
             max = x;
         }
     }
-    return;
+    return true;
 }
 
 vector<size_t> make_histogram (vector<double> numbers, size_t bin_count)

unittest.cpp

@@ -2,6 +2,7 @@
 #define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
 #include "doctest.h"
 #include "histogram_internal.h"
+#include "sr.h"
 
 
 TEST_CASE("distinct positive numbers") {
@@ -38,3 +39,11 @@ TEST_CASE("vector with same elements") {
     CHECK(min == 2);
     CHECK(max == 2);
 }
+TEST_CASE("Empty vector"){
+    double min = 0;
+    double max = 0;
+    std::vector<double> numbers {};
+    CHECK(find_minmax(numbers, min, max) == false);
+
+}
+