Modernize C++ namespace declarations

Author: mengdaming

cpp/include/kata/median_list_of_lists/MedianListOfLists.hpp

@@ -28,15 +28,9 @@ SOFTWARE.
 using ListInt = std::vector<int>;
 using List = std::vector<ListInt>;
 
-namespace com {
-namespace murex {
-namespace kata {
-namespace median_list_of_lists {
+namespace com::murex::kata::median_list_of_lists {
 
 MEDIAN_LIST_OF_LISTS_API float computeMedian(const List& values);
 
-} // namespace median_list_of_lists
-} // namespace kata
-} // namespace murex
-} // namespace com
+} // namespace com::murex::kata::median_list_of_lists
 

cpp/src/kata/median_list_of_lists/MedianListOfLists.cpp

@@ -23,18 +23,12 @@ SOFTWARE.
 
 #include <kata/median_list_of_lists/MedianListOfLists.hpp>
 
-namespace com {
-namespace murex {
-namespace kata {
-namespace median_list_of_lists {
+namespace com::murex::kata::median_list_of_lists {
 
 float computeMedian(const List& values)
 {
    return 0;
 }
 
-} // namespace median_list_of_lists
-} // namespace kata
-} // namespace murex
-} // namespace com
+} // namespace com::murex::kata::median_list_of_lists