Write a function that gives the mean digit (round towards nearest integer) of an input and positive number. For example:
x = 264 --> y = 4
x = 128 --> y = 4
Test Suite problem #4 has an incorrect value.
Test suite #4 is incorrect
Who knows the last digit of pi?
Make a run-length companion vector
Number of digits in an integer
Alternating 1´s and 0´s in a matrix
Ratio between sum of primes and sum of factors
Check if is a square
Sum of a geometric series
Get the value 100
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