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isbn.java
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35 lines (31 loc) · 926 Bytes
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#https://www.facebook.com/lakshay.gulati.5/posts/3439658002768650
# subscribed by Lakshay
import java.util.Scanner;
public class isbn {
public static void main(String[] args) {
System.out.println("enter the 10 digit ISBN");
long store[];
long sum=0;
store = new long[10];
Scanner scan = new Scanner(System.in);
String num= scan.next();
long num1 = Long.parseLong(num);
if(num.length()==10){
for (int i=9;i>=0;i--){
store[i]=(num1%10);
num1=(num1/10);
sum=sum+(store[i]*(i+1));
}
System.out.println(sum);
if ((sum%11)==0) {
System.out.println("Legal ISBN");
}
else{
System.out.println("Illegal ISBN");
}
}
else{
System.out.println("Illegal ISBN");
}
}
}