Question: 1 . Write a method ` int sumOfDigits ( int n ) ` that recursively sums the digits of ` n ` . 2 .

1. Write a method `int sumOfDigits(int n)` that recursively sums the digits of `n`.
2. Base case: If `n` is less than 10, return `n`(since a single-digit number is its sum).
3. Write a `main()` method to test the sum of digits with different inputs.

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