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Python活力练习Day9

Day9:打印出来所有的水仙花数

#水仙花数:一个三位数,其各位数字的立方和等于该数据本身

#例如153就是一个水仙花数,因为153 = 1^3 + 5^3 + 3^3

方法一:先将数字转换为字符串形式,将每位依次放进列表里

 

 1 def num():
 2     
 3     n = 100
 4     list_1 = []
 5     while n <= 999:
 6         list = [int(i) for i in str(n)]
 7         if list[0]**3 + list[1] ** 3 + list[2] ** 3 == n:
 8             list_1.append(n)
 9         n += 1
10     return list_1
11 
12 
13 print(num())
14 
15 #或者转换为for循环
16 def num():
17     list_1 = []
18     for n in range(100,1000):
19         list = [int(i) for i in str(n)]
20         if list[0]**3 + list[1] ** 3 + list[2] ** 3 == n:
21             list_1.append(n)
22     return list_1
23 
24 
25 print(num())

 

输出结果:

 

方法二:该方法可以找出来所有类似的数字,四位数(1634 = 1^4 + 6^4 + 3^4 + 4^4),五位数等等

 1 def num():
 2     list_1 = []
 3     for i in range(100,1000000):
 4         s = 0
 5         number = str(i)
 6         for j in number:
 7             s += int(j) ** len(number)
 8         if s == i:
 9             list_1.append(i)
10     return list_1
11 
12 if __name__ == '__main__':
13     print(num())

输出结果:

posted on 2019-12-26 09:08  dangdangA  阅读(222)  评论(0编辑  收藏  举报