Problem : (Business: checking ISBN) An ISBN (International
Standard Book Number) consists of 10 digits d1d2d3d4d5d6d7d8d9d10 The last
digit d10 is a checksum, which is calculated from the other nine digits using
the following formula:
(d1x1+d2x2+d3x3+d4x4+d5x5+d6x6+d7x7+d8x8+d9x9)%11
If the checksum is 10, the
last digit is denoted X according to the ISBN convention. Write a program that
prompts the user to enter the first 9 digits and displays the 10- digit ISBN
(including leading zeros). Your program should read the input as an integer. For
example, if you enter 013601267, the program should display 0136012671.
File name : Isbn.java
import java.util.*;
import javax.swing.*;
public class Isbn {
public static void main (String arg[]){
Scanner input = new Scanner (System.in);
int i, sum=0;
int a[] = new int [10];
String keep ="";
for (i=1; i<=9; i++){
System.out.print ("Enter value
for number "+i+"=");
a[i-1] = input.nextInt();
keep+=a[i-1];
sum+=a[i-1]*i;
}
int r = sum%11;
if (r==10)
System.out.print ("ISBN is : =
"+keep+"x");
else
System.out.print ("ISBN is : =
"+keep+r);
}
}
