diff --git a/Short-Answer/Algorithms_Answers.md b/Short-Answer/Algorithms_Answers.md
index b276aca1b..a28fc2a1b 100644
--- a/Short-Answer/Algorithms_Answers.md
+++ b/Short-Answer/Algorithms_Answers.md
@@ -2,13 +2,13 @@
 
 ## Exercise I
 
-a)
+a) O(1)
 
 
-b)
+b) O(n)
 
 
-c)
+c) O(n)
 
 ## Exercise II
 
diff --git a/Short-Answer/Algorithms_Questions.md b/Short-Answer/Algorithms_Questions.md
index 46f444535..cbb92f9a5 100644
--- a/Short-Answer/Algorithms_Questions.md
+++ b/Short-Answer/Algorithms_Questions.md
@@ -6,7 +6,7 @@ Give an analysis of the running time of each snippet of
 pseudocode with respect to the input size n of each of the following:
 
 ```python
-a)  a = 0
+a)  a = 0 
     while (a < n * n * n):
       a = a + n * n
 ```
diff --git a/recursive_count_th/count_th.py b/recursive_count_th/count_th.py
index 07456a00b..a7922c369 100644
--- a/recursive_count_th/count_th.py
+++ b/recursive_count_th/count_th.py
@@ -4,7 +4,12 @@
 Your function must utilize recursion. It cannot contain any loops.
 '''
 def count_th(word):
-    
-    # TBC
-    
-    pass
+
+    if word == "":
+        return 0
+
+    if word[:2] == "th":
+        return 1 + count_th(word[1:])
+    else:
+        return 0 + count_th(word[1:])
+
diff --git a/robot_sort/robot_sort.py b/robot_sort/robot_sort.py
index db6b1985b..197697a51 100644
--- a/robot_sort/robot_sort.py
+++ b/robot_sort/robot_sort.py
@@ -96,8 +96,22 @@ def sort(self):
         """
         Sort the robot's list.
         """
-        # Fill this out
-        pass
+        if self.can_move_right() is False:
+            return self._list
+        self.swap_item()
+        while self.can_move_right():
+            self.move_right()
+            if self.compare_item() == 1:
+                self.swap_item()
+        while self.can_move_left():
+            self.move_left()
+            if self.compare_item() == None:
+                self.swap_item()
+                break
+        self.move_right()
+        self.sort()
+                    
+                
 
 
 if __name__ == "__main__":