Number Operations (Sum, Count, Reverse) Using Loop in Java

Sum of Digits java public class Main { public static void main(String[] args) { int num = 1234, sum = 0; while (num > 0) { sum += num % 10; num /= 10; } System.out.println("Sum = " + sum); } } output 2. Count of Digits java public class Main { public static void main(String[] args) { int num = 1234, count = 0; while (num > 0) { count++; num /= 10; } System.out.println("Count = " + count); } } output 3. Reverse a Number public class Main { public static void main(String[] args) { int num = 1234, rev = 0; while (num > 0) { int digit = num % 10; rev = rev * 10 + digit; num /= 10; } System.out.println("Reverse = " + rev); } } output