Passed every test case->

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner sc=new Scanner(System.in);
    String A=sc.next().toLowerCase();
    String B=sc.next().toLowerCase();
    sc.close();
    char arr1[]=A.toCharArray();
    char arr2[]=B.toCharArray();
    System.out.println(arr1.length+arr2.length);
    int n=A.compareToIgnoreCase(B);

     String c=A.concat(" "+B);
  char arr3[]=c.toCharArray();

  for (int i = 0; i < arr3.length; i++) {
      if(arr3[i]==' ') {
            if(arr3[0]<=arr3[i+1]) {
                System.out.println("No");
            }
            else {
                System.out.println("Yes");
            }
        }    
        }

  arr3[0]=(char)(arr3[0]-32);
  for (int i = 1; i < arr3.length; i++) {
    if(arr3[i]==' ') {
        arr3[i+1]=(char)(arr3[i+1]-32);
    }
}

  for (char d : arr3) {
    System.out.print(d);
}

}

}