How to output the number of all daffodils in python

Output method: First use the for statement to loop through all the numbers from 100 to 999, and assign it to the variable n; then decompose the variable n to obtain the ones digit k, tens digit j and hundreds digit i ; Finally, determine whether the cube sum of i, j and k numbers is equal to n. If so, just use the "print(n)" statement to output.

The operating environment of this tutorial: windows7 system, python3.7 version, DELL G3 computer

The so-called "daffodil number" refers to a three-dimensional A number of digits whose sum of cubes is equal to the number itself. For example: 153 is a "daffodil number" because 153=1 cubed + 5 cubed + 3 cubed.

python outputs the number of all daffodils

for n in range(100,1000):
    i = n // 100
    j = n // 10 % 10
    k = n % 10
    if n == i ** 3 + j ** 3 + k ** 3:
        print (n)

Output:

153
370
371
407

Detailed explanation

Program analysis: using for Loop control 100-999 numbers, each number is decomposed into units, tens and hundreds.

First line:

for n in range(100,1000):

Because the narcissus number is a three-digit number, we loop through all the numbers from 100 to 999 and assign it to n

Second line:

i = n // 100

Divide 100 by n, and what you get is actually a three-digit hundred digit. Assign it to i

Third line:

j = n // 10 % 10

Divide 10 by n, and you will get a two-digit number consisting of hundreds and tens. Then divide this number by 10 to find the remainder. You will get our tens number, and assign it to j

The fourth line:

k = n % 10

Divide n by 10 and find the remainder. What you get is the single digit number of n. Assign it to k. At this time, the hundreds, tens and tens digits of the three-digit n are We have already obtained the single digits and assigned them to i, j, k respectively

The fifth line:

if n == i ** 3 + j ** 3 + k ** 3:

Judgment: If n is equal to the cube of its hundreds digits and ten digits If the cube is a single digit cube, then it is the narcissus number. At this time, print out the n that meets the conditions, otherwise it will enter the next loop

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