Update largest-rectangle-in-histogram.py

Author: kamyu104

Python/largest-rectangle-in-histogram.py

@@ -7,7 +7,7 @@ def largestRectangleArea(self, heights):
         :type heights: List[int]
         :rtype: int
         """
-        stk, result, i = [-1], 0, 0
+        stk, result = [-1], 0
         for i in xrange(len(heights)+1):
             while stk[-1] != -1 and (i == len(heights) or heights[stk[-1]] >= heights[i]):
                 result = max(result, heights[stk.pop()]*((i-1)-stk[-1]))