Ultra fast mathematician why my code is passing only 1 test case?

#1 
	Scanner scn = new Scanner(System.in);

int t = scn.nextInt();
for(int i=1 ; i<=t ; i++)
{
String N1=scn.nextLine();
String N2 = scn.nextLine();
System.out.print(maths(N1,N2));
}
}
public static String maths(String N1 , String N2)
{
String N3="";
for(int i=0 ; i<N1.length() ; i++)
{
if(N1.charAt(i)==N2.charAt(i))
{
N3=N3+0;
}
else{
N3=N3+1;
}
}
return N3;
}
}

#2

print in new line for each testcase:
System.out.println(maths(N1,N2));

please mark your doubt as resolved :slight_smile:

#3

thanks for helping me

1 Like