import java.util.Scanner;

public class E201_06_04_身份證驗證 {
    public static void main(String[] args) {
        System.out.println("請輸入18位身份證號碼(X大寫):");
        Scanner scan = new Scanner(System.in);
        String id = scan.next();
        System.out.printf("你的身份證號%s",isLegal(id)?"合法":"不合法");
        if(isLegal(id)){
            System.out.println("你的出身年月是:" + dateOfBirth(id));
            System.out.println("你的性別是:" + sex(id));
        }
    }

    /**
     * 判斷性別
     * @param id    身份證號碼
     * @return  "女":性別為女."男":性別為男
     */
    private static String sex(String id) {
        char[] strinigAll = id.toCharArray();
        if(strinigAll[16]%2 == 0){
            return "女";
        }else {
            return "男";
        }
    }

    /**
     * 返回出生日期
     * @param id    身份證號
     * @return      birth:出生日期
     */
    private static String dateOfBirth(String id) {
        String birth;
        birth = id.substring(6,14);
        return birth;
    }

    /**
     * 判斷身份證是否合法
     * @param id    身份證號碼
     * @return  true:合法,false:不合法
     */
    private static boolean isLegal(String id) {
        int sum = 0;
        char[] chekBit = {'1','0','X','9','8','7','6','5','4','3','2'};
        int[]   power = {7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};
        char[] strinigAll = id.toCharArray();
        for (int i = 0; i < 17; i++) {
            sum += power[i]*(strinigAll[i] - '0');
        }
        if(strinigAll[17] == chekBit[sum%11]){
            return true;
        }
        return false;
    }
}