Found very intersting approach to count the digits of an integers #python:
from math import floor, log10
def count_digits(n):
return 1 + floor(log10(n))
In [2]: count_digits(5)
Out[2]: 1
In [3]: count_digits(999)
Out[3]: 3
In [4]: count_digits(1000)
Out[4]: 4
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