@@ -0,0 +1,391 @@
+from operator import itemgetter%0Aclass Solution(object):%0A    def findMinArrowShots(self, points):%0A        %22%22%22%0A        :type points: List%5BList%5Bint%5D%5D%0A        :rtype: int%0A        %22%22%22%0A        points.sort(key=itemgetter(1))%0A        end = None%0A        ans = 0%0A        for p in points:%0A            if end is None or end %3C p%5B0%5D:%0A                end = p%5B1%5D%0A                ans += 1%0A        return ans%0A

Add py solution for 452. Minimum Number of Arrows to Burst Balloons