考虑到三位一循环的结构,采取递归方法,希望用‘ ’.join()来输出结果,但是实际上输出时会出现格式错 遂借助split替换重复空格 num1 = ['','one','two','three','four','five','six', 'seven','eight','nine','ten','eleven','twelve', 'thirteen','fourteen','fifteen','si...