Nested for loop

Question

How would you create:
54321
4321
321
21
1
in a nested for loop

Answer 1

a = ''
for i in range(5,0,-1):
for j in range(i,0,-1):
a += str(j)
print(a)
a=''

Answer 2

Was an assignment in school. Couldnt figure it out for some reason.

Answer 3

Why would you want to use nested loops if you can write a function which does the same for natural numbers of arbitrary length without:
https://code.sololearn.com/ckvDz9Xkl2db
If you cannot import math for whatever reasons, you can still determine the number of digits. Convert the integer to a string and cound the letters using the len() function.