Problem Ultra Fast mathematician problem 2----------

#1

i have used string now what is the error in my code-----
import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner cin = new Scanner(System.in);
int t = cin.nextInt();
while(t>0){
String s1 = cin.nextLine();
String s2 = cin.nextLine();
StringBuilder s3 = new StringBuilder("");
for(int i = 0;i<s1.length();i++){
if(s1.charAt(i) == s2.charAt(i)){
s3.append(“0”);
}else{
s3.append(“1”);
}
}
System.out.println(s3);
t–;
}
}
}

#2

Hi @AbhishekAhlawat1102,
Just change nextLine() to next() … this is only a small bug . otherwise code runs fine