Use front() over index access.

1 files changed, 5 insertions, 5 deletions

diff --git a/merge-sort.cpp b/merge-sort.cpp
index e7647a0..5bbe1fe 100644
--- a/merge-sort.cpp
+++ b/merge-sort.cpp
@@ -15,25 +15,25 @@ void merge(list_t& lst, list_t left, list_t right)
     {
         if (!left.empty() && !right.empty())
         {
-            if (left[0] <= right[0])
+            if (left.front() <= right.front())
             {
-                res.push_back(left[0]);
+                res.push_back(left.front());
                 left.pop_front();
             }
             else
             {
-                res.push_back(right[0]);
+                res.push_back(right.front());
                 right.pop_front();
             }
         }
         else if (!left.empty())
         {
-            res.push_back(left[0]);
+            res.push_back(left.front());
             left.pop_front();
         }
         else if (!right.empty())
         {
-            res.push_back(right[0]);
+            res.push_back(right.front());
             right.pop_front();
         }
     }