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Java Program to find Sum of Digits
Photo Credit to CodeToFun
π Introduction
In the realm of programming, manipulating and extracting information from numbers is a common task. One such operation is finding the sum of the digits of a given number. This involves breaking down the number into its individual digits and adding them together.
In this tutorial, we will explore a Java program designed to find the sum of the digits of a given number.
π Example
Let's delve into the Java code that accomplishes this task.
import java.util.Scanner;
public class SumOfDigits {
// Function to find the sum of digits of a number
static int sumOfDigits(int number) {
int sum = 0, digit;
// Iterate through each digit of the number
while (number != 0) {
// Extract the last digit
digit = number % 10;
// Add the digit to the sum
sum += digit;
// Remove the last digit from the number
number /= 10;
}
return sum;
}
// Driver program
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
// Replace this value with the number you want to find the sum of digits for
System.out.print("Enter a number: ");
int number = scanner.nextInt();
// Call the function to find the sum of digits
int result = sumOfDigits(number);
// Print the result
System.out.println("The sum of digits of " + number + " is: " + result);
scanner.close();
}
}
π» Testing the Program
To test the program with different numbers, replace the value of number in the code or enter a number when prompted.
The sum of digits of 12345 is: 15
Compile and run the program to find the sum of digits for the specified number.
π§ How the Program Works
- The program defines a class SumOfDigits containing a static method sumOfDigits that takes an integer number as input and returns the sum of its digits.
- Inside the method, it uses a while loop to iterate through each digit of the number.
- It extracts the last digit, adds it to the sum, and removes the last digit from the number.
- Inside the main program, replace the value of number with the desired number you want to find the sum of digits for.
- The program calls the sumOfDigits method and prints the result.
π§ Understanding the Concept of Sum of Digits
Before delving into the code, let's understand the concept of finding the sum of digits. It involves breaking down a number into its individual digits and adding them together.
π’ Optimizing the Program
While the provided program is effective, consider exploring and implementing alternative approaches or optimizations for finding the sum of digits.
Feel free to incorporate and modify this code as needed for your specific use case. Happy coding!
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