What does this code do? Please explain me the statement inside of the while block?

Question

import java.util.*;
public class reversal
{
public static void main(String[] args) {
Scanner in= new Scanner(System.in);
System.out.println("Enter any number");
long n=in.nextLong();
System.out.println("You have entered "+n);
long s,m=0;
while(n>0)
{
s=n%10;
m+=s;
n/=10;
m*=10;
}
m/=10;
System.out.println("The number after reversal is "+m);
}
}
}

Answer 1

let's say the number you entered is 369

is n=369 greater than 0? yes, it is.
s=369%10=9 (take a look at the modulus operator)
m=9
n=36
m=90

is n=36 greater than 0? yes, it is.
s=36%10=6
m=96
n=3
m=960

is 3 greater than 0? yes.
s=3
m=963
n=0
m=9630

is 0 greater than 0? no. leave the loop.

m=963
output m, which is the number you entered, but reversed.