Create running-sum-of-1d-array.py

Author: kamyu104

Python/running-sum-of-1d-array.py

@@ -0,0 +1,12 @@
+# Time:  O(n)
+# Space: O(1)
+
+class Solution(object):
+    def runningSum(self, nums):
+        """
+        :type nums: List[int]
+        :rtype: List[int]
+        """
+        for i in xrange(len(nums)-1):
+            nums[i+1] += nums[i]
+        return nums