python之可换多少汽水瓶
''' 有这样一道智力题:“某商店规定:三个空汽水瓶可以换一瓶汽水。小张手上有十个空汽水瓶,她最多可以换多少瓶汽水喝?”答案是5瓶, 方法如下:先用9个空瓶子换3瓶汽水,喝掉3瓶满的,喝完以后4个空瓶子,用3个再换一瓶,喝掉这瓶满的,这时候剩2个空瓶子。然后你让 老板先借给你一瓶汽水,喝掉这瓶满的,喝完以后用3个空瓶子换一瓶满的还给老板。如果小张手上有n个空汽水瓶,最多可以换多少瓶汽水喝? ''' numOfBottle = int(input("Please input bottle number:")) def calcBottle(numOfEmptyBottle): numOfChangeBottle = 0 numOfLeftEmptyBottle = numOfEmptyBottle while 1: if numOfLeftEmptyBottle == 0: numOfChangeBottle = numOfChangeBottle numOfLeftEmptyBottle = 0 if numOfLeftEmptyBottle == 1: numOfChangeBottle = numOfChangeBottle numOfLeftEmptyBottle = 1 if numOfLeftEmptyBottle == 2: numOfChangeBottle = numOfChangeBottle + 1 numOfLeftEmptyBottle = 0 if numOfLeftEmptyBottle > 2: numOfChangeBottle = numOfChangeBottle + numOfLeftEmptyBottle // 3 numOfLeftEmptyBottle = numOfLeftEmptyBottle % 3 + numOfLeftEmptyBottle // 3 if numOfLeftEmptyBottle < 2: break return numOfChangeBottle print(calcBottle(numOfBottle))
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