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 = 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 ) { num = num / 10 ; count ++; } 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 ) { rev = rev * 10 + num % 10 ; num = num / 10 ; } System . out . println ( "Reverse = " + rev ); } } output