diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8d2c52d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+gmon.out
+student_rank
diff --git a/note.txt b/note.txt
new file mode 100644
index 0000000..c112f32
--- /dev/null
+++ b/note.txt
@@ -0,0 +1,11 @@
+execution en 1000 1000
+bubblesort prends 83.65% du temps d'éxécution de l'algo
+
+execution en 1000 10000
+30 sec d'execution
+
+piste optimisation :
+réduire appel bubblesort
+
+après avoir enlever l'appel de bubblesort dans find_rank_student
+0.5 sec d'execution
\ No newline at end of file
diff --git a/student_rank.c b/student_rank.c
index af84003..c6dc75a 100644
--- a/student_rank.c
+++ b/student_rank.c
@@ -55,7 +55,6 @@ int find_rank_student(int student_grade, int* grades_array, int students_number)
 {
     int position = -1;
     int i = 0;
-    bubblesort(grades_array,students_number);
     for(i = students_number-1; i >= 0; i--)
     {
         if(grades_array[i] == student_grade)