使用enumerate遍历，似乎更快

Azureki · Sep 18, 2018 · 21d4302 · 21d4302
1 parent e3c0ebd
commit 21d4302
Showing 1 changed file with 3 additions and 4 deletions.
diff --git a/lc724. Find Pivot Index.py b/lc724. Find Pivot Index.py
@@ -6,12 +6,11 @@ def pivotIndex(self, nums):
         """
         lsum = 0
         rsum = sum(nums)
-        for i in range(len(nums)):
-            lsum += nums[i]
-
+        for i, num in enumerate(nums):
+            lsum += num
             if lsum == rsum:
                 return i
-            rsum -= nums[i]
+            rsum -= num
         else:
             return -1