Chewbacca error

#1

my code is here:

import java.util.*;
public class Main {
public static void main(String args[]) {
// Your Code Here
Scanner scn = new Scanner(System.in);
int num = scn.nextInt();

	int mul=1;
	int rnum=0;
	while(num!=0)	
	{   int rev;
		int rem=num%10;
		if(num/10==0)
		{
			
			if(rem==9 || rem<=4)
			{
				rev=rem;
			}
			else
			{
				rev=9-rem;
			}
		}
		else
		{
		if(rem<=4)
		{
			rev=rem;
		}
		else 
		{
			rev=9-rem;
		}
		
	    rnum=rnum+rev*mul;
	    mul=mul*10;
	    num=num/10;
		System.out.println(rnum);
		}
     }
	System.out.print(rnum);

}

}

i m unable to print the answer that is . rnum

#2

@preet25.pc
The logic and code is correct but you are making a simple mistake,i.e. your while is unable to terminate as you are writing num=num/10 condition inside else block which doesn’t allow n to approach 0.
Instead the correct way is to write outside these three conditions
rnum=rnum+revmul;
mul=mul10;
num=num/10;
inside the while but outside the else block.
Hit like if it It helps else if it doesn’t helps revert back with updated code here.

#3

it is still showing run time error in two test cases

#4

my code: