| 123456789101112131415161718 | # -*- coding:utf-8 -*-class RectUtil():    def __init__(self):        pass    def calArea(self,area):        if area.__len__() < 4:            return -1        height = area[2] - area[1]        width = area[3] - area[0]        return height * width    def calArcLength(self, area):        if area.__len__() < 4:            return -1        height = area[2] - area[1]        width = area[3] - area[0]        return height * 2 + width*2
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