Increasing numbers

In this exercise, we say that a natural number is increasing if every
digit is less than or equal to the digit which is on its right (if any).

Write a recursive function that tells if a natural number @n@ is
increasing or not.

Interface

+-------:+:-----------------------------------------------+
| C++    |     bool is_increasing(int n);                 |
+--------+------------------------------------------------+
| C      |     int is_increasing(int n);                  |
+--------+------------------------------------------------+
| Java   |     public static boolean isIncreasing(int n); |
+--------+------------------------------------------------+
| Python |     is_increasing(n)  # returns bool           |
+--------+------------------------------------------------+
|        |     is_increasing(n: int) -> bool              |
+--------+------------------------------------------------+

Observation

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

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T10:25:53.122Z

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