diff --git a/13.py b/13.py
index 71dbe09bdb32aa6db030404755b054d3a76e31db..f4fd17a960c4fcfa47f4d9e737758226ecf4d326 100644
--- a/13.py
+++ b/13.py
@@ -1,3 +1,6 @@
+# Write a function solve that returns the running sum of a list. 
+# The running sum is the sum of all elements up to each index.
+
 def solve(nums):
     result = [nums[0]]
     for i in range(1, len(nums)):
diff --git a/14.py b/14.py
new file mode 100644
index 0000000000000000000000000000000000000000..a74cfdbbf3c35463fb6762f8ec3231d5805865dc
--- /dev/null
+++ b/14.py
@@ -0,0 +1,6 @@
+# Write a function solve that reverses the words in a string. 
+# Words are separated by spaces.
+
+def solve(string):
+    list = reversed(string.split())
+    return ' '.join(list)
\ No newline at end of file