pesel

class PolishNumberValidator {
 
    def String value;
 
    private static final int[] peselWeight = [9, 7, 3, 1, 9, 7, 3, 1, 9, 7]
 
    def isPesel() {
        if (StringUtils.isBlank(value)) {
            return false
        }
        if (! (value =~ /^\d{11}$/) ) {
            return false
        }
 
 
        int sum = 0
        peselWeight.eachWithIndex {val, i ->
            sum += val*(value[i] as int)
        }
        return sum % 10 == (value[10] as int)
    }
}