Can anyone tell me what is wrong in this?
My code is:
import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner scn = new Scanner(System.in);
int x = scn.nextInt();
if (x >= 1 && x <= 1000000000000000000 {
int num = x;
int count = 0;
while (x != 0) {
count++;
x = x / 10;
}
int i;
int[] arr = new int[count];
i = count - 1;
while (num != 0) {
int rem = num % 10;
arr[i] = rem;
i--;
num = num / 10;
}
for (i = 0; i < arr.length; i++) {
int a = 9 - arr[i];
int tmp = arr[i];
if (i == 0 && a == 0) {
arr[i] = tmp;
} else if (a < tmp) {
arr[i] = a;
} else if (tmp < a) {
arr[i] = tmp;
}
}
int sum = 0, j = count - 1;
for (i = 0; i < arr.length; i++) {
sum = sum + arr[i] * (int) Math.pow(10, j);
j--;
}
System.out.println(sum);
}
}
}