求Java大神给个代码！身份证第18位计算法
1个回答
import java.util.Scanner;
public class IDValidator {
private final int[] xishu = new int[] { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7,
9, 10, 5, 8, 4, 2 };
private final char[] last = new char[] { '1', '0', 'X', '9', '8', '7', '6',
'5', '4', '3', '2' };
private String id;
public IDValidator(String id) {
this.id = id;
}
public boolean validate() {
if (null == id || id.length() != 18) {
return false;
}
char[] string = id.toCharArray();
int sum = 0;
for (int i = 0; i < string.length - 1; i++) {
sum += (string[i] - '0') * xishu[i];
}
return last[sum % 11] == string[17];
}
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String id = in.next();
IDValidator validator = new IDValidator(id);
System.out.println(validator.validate());
}
}
