diff --git a/Running Sum of Array.py b/Running Sum of Array.py
new file mode 100644
index 0000000..11486f3
--- /dev/null
+++ b/Running Sum of Array.py	
@@ -0,0 +1,13 @@
+class Solution(object):
+    def runningSum(self, nums):
+        """
+        :type nums: List[int]
+        :rtype: List[int]
+        """
+        sum = 0
+        result = []
+        for i in nums:
+            sum += i
+            result.append(sum)
+            
+        return result