Recursive number of digits

Write a recursive function that returns the number of digits of @n@.

Interface

int number_of_digits(int n);

int number_of_digits(int n);

public static int numberOfDigits(int n);

number_of_digits(n)  # returns int

number_of_digits(n: int) -> int

Precondition

We have @n@ $\ge 0$.

Observation

You only need to submit the required procedure; your main program will be ignored.

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T11:05:52.027Z

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