diff --git a/letsdrill.rb b/letsdrill.rb
index 9371cf5..fb7442c 100644
--- a/letsdrill.rb
+++ b/letsdrill.rb
@@ -1,12 +1,22 @@
 def get_letter_grade(integer)
- 
-  #Put your code here!
+    case integer
+    when (0..59)
+      'F'
+    when (60..69)
+      'D'
+    when (70..79)
+      'C'
+    when (80..89)
+      'B'
+    else
+      'A'
+    end
 
 end
 
 def shortest_string(array)
 
-  #Put your code here!
+array.min_by &:length
 
 end