Python dynamic exercises Day9

Day9: print out all the numbers daffodils

# Narcissistic number: a three-digit number, the digits of its cube is equal to the data itself

# 153 is a number, for example, daffodils, since 153 = 1 ^ 3 ^ 3 + 5 + 3 ^ 3

Method one: first converted to a string digital form, will turn into each list

 

 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())

 

Output:

 

Method Two: The method can find out all such numbers, digit (1634 ^ 4 + 1 = 6 + 3 ^ 4 ^ 4 ^ 4 + 4), and so the number of five

 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 (whether ())

Output: