作业代码（非最优
import java.util.*;
public class njava06{
public static void main(String[]args){
//get imformation;
System.out.println("Please enter your id :");
Scanner in = new Scanner(System.in);
String id = in.nextLine();
int[] arr = new int[18];
for (int i = 0;i < id.length();i++){
String cup = String.valueOf(id.charAt(i));
int num = Integer.parseInt(cup);
arr[i] = num;
}
//computer the imformation;
int year = 1000*arr[6]+100*arr[7]+10*arr[8]+arr[9];
int month = 10*arr[10]+arr[11];
int day = 10*arr[12]+arr[13];
System.out.println("Please enter the year :");
int nowYear = in.nextInt();
System.out.println("Please enter the month :");
int nowMonth = in.nextInt();
System.out.println("Please enter the day :");
int nowDay = in.nextInt();
System.out.println("You born on "+year+"/"+month+"/"+day);
//make a choice and print out;
if(nowMonth == month){
if(nowDay >= day){
int age = nowYear - year;
System.out.println("You are "+age+"years old.");
}
else{
int age = nowYear - year -1;
System.out.println("You are "+age+"years old.");
}
}
else if(nowMonth > month){
int age = nowYear - year;
System.out.println("You are "+age+"years old.");
}
else{
int age = nowYear - year -1;
System.out.println("You are "+age+"years old.");
}
if(arr[16]%2 == 0){
System.out.println("You are female");
}
else{
System.out.println("You are male");
}
//get the code of imformation;
int point = 0;
for(int i = 0;i < id.length();i++){
int b = arr[i]*((int)(java.lang.Math.pow(2,i))%11);
point += b;
}
int codeInf = point%11;
System.out.print("The code imformation is ");
if(codeInf == 0){
System.out.print(1);
}
else if(codeInf == 1){
System.out.print(0);
}
else if(codeInf == 2){
System.out.print('X');
}
else{
System.out.print(12-codeInf);
}
}
}
