Square Every Digit

Description:

Welcome. In this kata, you are asked to square every digit of a number and concatenate them.

For example, if we run 9119 through the function, 811181 will come out, because 92 is 81 and 12 is 1.

Note: The function accepts an integer and returns an integer

 

 

 

Solution:

1. Separate the numbers by one digit.
2. Square each of the separated numbers.
3. Return the squared numbers side by side.

 

def square_digits(num):
    return int(''.join([str(i**2) for i in map(int, str(num))]))