How do you calculate the sum of the digits of a number in Java?

Steps to Find the Sum of Digits of a Number in Java

Read or initialize an integer N.
Declare a variable (sum) to store the sum of numbers and initialize it to 0.
Find the remainder by using the modulo (%) operator.
Add the last digit to the variable sum.
Divide the number (N) by 10.

How do you divide numbers into digits?

Since the numbers are decimal (base 10), each digit’s range should be 0 to 9.

So, we can get it easy by doing modulo 10. Like,
12 % 10 => 2 ( we have split the digit 2 from number 12) Now, we have to split the digit 1 from number 12.
12 / 10 => 1. Now take modulo 10.
1 % 10 = 1.

What is the sum of all digits from 1 to 100000?

Easiest way to find the sum of , 1 to 100, 1 to 1000……. 1 to 1,000,000 and so on………… What-is-the-sum-of-all-numbers-from-1-to-1-000-000? = 500000500000.

How to find the sum of numbers in Java?

After that we use modulus and division operation respectively to find the sum of digits of number as output. Here is the source code of the Java Program to Compute the Sum of Digits in a given Integer. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.

How to calculate the sum of digits in a given integer?

Enter any integer number as input. After that we use modulus and division operation respectively to find the sum of digits of number as output. Here is the source code of the Java Program to Compute the Sum of Digits in a given Integer. The Java program is successfully compiled and run on a Windows system.

How to find sum of digits using recursion?

Here is the source code of the Java Program to Find Sum of Digits of a Number using Recursion. The Java program is successfully compiled and run on a Windows system. The program output is also shown below. Sanfoundry Global Education & Learning Series - 1000 Java Programs.

How to find the rightmost digit of a number?

Recommended: Please solve it on “ PRACTICE ” first, before moving on to the solution. Get the rightmost digit of the number with help of the remainder ‘%’ operator by dividing it by 10 and add it to sum. Divide the number by 10 with help of ‘/’ operator to remove the rightmost digit.