Sha256: dd40c923b4d3775b49fc722fa948f38a15a5d9602c66683f49619f81d8dcd99e
Contents?: true
Size: 894 Bytes
Versions: 112
Compression:
Stored size: 894 Bytes
Contents
class IsbnVerifier {
boolean isValid(String stringToVerify) {
String isbn = stringToVerify.replace("-", "");
int total = 0;
if (isbn.length() != 10) {
return false;
}
for (int i = 0; i < isbn.length() - 1; i++) {
char currentChar = isbn.charAt(i);
if(Character.isDigit(currentChar)) {
int currentCharVal = Character.getNumericValue(currentChar);
total += currentCharVal * (10 - i);
} else {
return false;
}
}
char finalChar = isbn.charAt(isbn.length() - 1);
if (Character.isDigit(finalChar)) {
total += Character.getNumericValue(finalChar);
} else if (finalChar == 'X') {
total += 10;
} else {
return false;
}
return total % 11 == 0;
}
}
Version data entries
112 entries across 112 versions & 1 rubygems