python实现鸡兔同笼源码.zip

# coding:utf-8 """ P.S. : The translation is not accurate! Chicken rabbit cages are one of the mathematical problems of ancient China. About 1500 years ago, this interesting question was recorded <Sun Tzu Arithmetic>[1]. The book goes translated into English like this[2]: Now there are chickens and rabbits in the same cage, with thirty-five heads on top and ninety-four feet on the bottom, ask how many chickens and rabbits there are? ------------------------------------------------------------------------------- [1]: <Sun Tzu Arithmetic> The name of the book is translated as Chinese is 《孙子算经》(Sun Zi Suan Jing) [2]: The original text is as follows: 今有雉兔同笼， Now there are chickens and rabbits in the same cage, 上有三十五头， with thirty-five heads on top 下有九十四足， and ninety-four feet on the bottom, 问雉兔各几何？ ask how many chickens and rabbits there are? """ class NumberError(Exception): """ Chickens' num / rabbits' num isn't positive number. """ def __init__(self, *args, **kwargs): pass def Chicken_rabbit_cages_1(feet: int, heads: int, chicken_feet: int, rabbit_feet: int, chicken: str = "chicken", rabbit: str = "rabbit" ) -> dict: """ Chicken rabbit cages(ordinary). :param feet: The number of heads in total. :param heads: The number of heads in total. :param chicken_feet: Each chicken has a few feet. :param rabbit_feet: Each rabbit has a few feet. :param chicken: "chicken" 's name. :param rabbit: "rabbit" 's name. :return: results -> dict """ if rabbit_feet < chicken_feet: raise ValueError("'chicken_feet' is greater than 'rabbit_feet'") results = {chicken: None, rabbit: int((feet - heads * chicken_feet) / (rabbit_feet - chicken_feet))} results[chicken] = heads - results[rabbit] if results[chicken] <= 0: raise NumberError(f"{chicken}'s num isn't positive number.") if results[rabbit] <= 0: raise NumberError(f"{rabbit}'s num isn't positive number.") return results def Chicken_rabbit_cages_2(score: int, number_of_questions: int, answer_the_score_correctly: int or float, answer_the_wrong_score_value: int or float, correctly: str = "correctly", wrong: str = "wrong", ) -> dict: """ Chicken rabbit cages("answer_the_wrong_score_value" is positive number). :param score: The number of score in total. :param number_of_questions: The number of questions in total. :param answer_the_score_correctly: The score of the question that is answered correctly. :param answer_the_wrong_score_value: The score of the question that is answered incorrect (deducted score). :param correctly: "correctly" 's name. :param wrong: "wrong" 's name. :return: results -> dict """ if str(answer_the_wrong_score_value)[0] != "-": raise ValueError("'answer_the_wrong_score_value' is positive number.") if answer_the_score_correctly < answer_the_wrong_score_value: raise ValueError("'answer_the_score_correctly' is greater than 'answer_the_wrong_score_value'") results = {correctly:None, wrong: int( (number_of_questions * answer_the_score_correctly - score) / (answer_the_score_correctly - answer_the_wrong_score_value) ) } results[correctly] = number_of_questions - results[wrong] if results[correctly] <= 0: raise NumberError(f"{correctly}'s num isn't positive number.") if results[wrong] <= 0: raise NumberError(f"{wrong}'s num isn't positive number.") return results if __name__ == "__main__": r = Chicken_rabbit_cages_1(94, 35, 2, 4) print(r) r = Chicken_rabbit_cages_2(64, 8, 10, -6) print(r)