Complete task

letsdrill.rb

@@ -1,24 +1,42 @@
 def get_letter_grade(integer)
-
-  #Put your code here!
-
+  if integer >= 90
+    'A'
+  elsif integer < 90 && integer >= 80
+    'B'
+  elsif integer < 80 && integer >= 70
+    'C'
+  elsif integer < 70 && integer >= 60
+    'D'
+  elsif integer < 60
+    'F'
+  end
 end
 
 def shortest_string(array)
-
-  #Put your code here!
-
+  if array.empty?
+    nil
+  else
+    shortest_length = array[0].length
+    shortest_word = array[0]
+    array.each do |word|
+      if word.length < shortest_length
+        shortest_length = word.length
+        shortest_word = word
+      end
+    end
+    shortest_word
+  end
 end
- 
+
 
 
 ### Don't touch anything below this line ###
- 
+
 p "Fetch Letter Grade: You should have 2 trues"
-p get_letter_grade(89) == "B" 
-p get_letter_grade(73) == "C" 
+p get_letter_grade(89) == "B"
+p get_letter_grade(73) == "C"
 p
 p "Shortest String: You should have 3 trues"
 p shortest_string(["touch","this", "car"]) == "car"
-p shortest_string([]) == nil 
-p shortest_string(["can", "a", "solve", "Find", "solution"]) == "a" 
+p shortest_string([]) == nil
+p shortest_string(["can", "a", "solve", "Find", "solution"]) == "a"