Business: check ISBN-10

 Business: check ISBN-10

Problem Description


An ISBN-10 (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:


(d1 * 1 + d2 * 2 + d3 * 3 + d4 * 4 + d5 * 5 +

d6 * 6 + d7 * 7 + d8 * 8 + d9 * 9) % 11


If the checksum is 10, the last digit is denoted as X according to the ISBN-10 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.

Logic Test Case 1


Input (stdin)

986754321


Expected Output


The ISBN-10 number is 986754321


1

Logic Test Case 2


Input (stdin)

899678465


Expected Output


The ISBN-10 number is 899678465


6



CODE AREA

import java.util.*;

import java.io.*;

public class TestClass {

public static void main(String[] args) { 

Scanner s=new Scanner(System.in);

     int a=s.nextInt();

    int d1 = a / 100000000;

int remainingDigits = a % 100000000;

int d2 = remainingDigits / 10000000;

remainingDigits %= 10000000;

int d3 = remainingDigits / 1000000;

remainingDigits %= 1000000;

int d4 = remainingDigits / 100000;

remainingDigits %= 100000;

int d5 = remainingDigits / 10000;

remainingDigits %= 10000;

int d6 = remainingDigits / 1000;

remainingDigits %= 1000;

int d7 = remainingDigits / 100;

remainingDigits %= 100;

int d8 = remainingDigits / 10;

remainingDigits %= 10;

int d9 = remainingDigits;

int d10 = (d1 * 1 + d2 * 2 + d3 * 3 + d4 * 4 + d5 * 5 

+ d6 * 6 + d7 * 7 + d8 * 8 + d9 * 9) % 11;

System.out.println("The ISBN-10 number is " + d1 + d2 + d3 + d4 + d5 

+ d6 + d7 + d8 + d9);

if (d10 == 10)

System.out.println("X");

else

System.out.println(d10);

}

}

Post a Comment

0 Comments