Sum of Two Digits
Programming Basics · Java
TASK
Problem
Given a two-digit positive integer, print the sum of its digits.
EXAMPLE
Example
57
12
LIMITS
Constraints
10 ≤ n ≤ 99
LEARN
Theory for this problem
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The core idea of **Sum of Two Digits** is to model the requested operation directly: Given a two-digit positive integer, print the sum of its digits. The reference solution uses `Scanner` for input. Keep only the state needed for this result, choose numeric types that cover the stated bounds, and preserve the exact input/output contract. This makes the solution easier to verify on boundary cases and avoids unrelated work.
NEED HELP?
Hints
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['Follow the statement for **Sum of Two Digits** literally and identify the smallest state needed to produce its output.', 'The reference solution relies on `Scanner` for input; test the smallest allowed input and one boundary case from the constraints.']
ANSWER
Solution
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// CodeMaster — Sum of Two Digits
import java.util.*;
public class Main {
public static void main(String[] args) throws Exception {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int tens = n / 10;
int ones = n % 10;
System.out.println(tens + ones);
}
}