Addition Errors | Editorial by aksingh007

Just add A and B using the + operator and say we get X.
Using Bob's Addition Algorithm we do the following:
1.Create a character array for number A and B
2.Now add element by element and if there is a carry just ignore it.
3.Convert the final character array to a number(Y)
Now the error is **abs(X-Y).**

Code:
```
import java.util.Scanner;
 
class TestClass {
    public static void main(String args[] ) {
        Scanner sc=new Scanner(System.in);
        int t=sc.nextInt();
        String a,b;
        while(t-->0)
        {
            a=sc.next();
            b=sc.next();
            int len=a.length()>b.length()?a.length():b.length();
            StringBuilder str=new StringBuilder("0");
            int k=len-1;
            for(int i=a.length()-1,j=b.length()-1;i>=0 && j>=0;i--,j--)
            {
                int x=Integer.parseInt(Character.toString(a.charAt(i)));
                int y=Integer.parseInt(Character.toString(b.charAt(j)));
                if(x+y<10 && i!=0 &&j!=0)
                str.append('0');
                else if(x+y>=10)
                str.append('1');
                k--;
            }
            int ind=str.reverse().indexOf("1");
            if(ind!=-1)
            str.delete(0,ind);
            else
            str=new StringBuilder("0");
            System.out.println(str.toString());
        }
    }
}
//Language: Java 8
```

Addition Errors | Editorial by aksingh007

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