update,

_resources/it114105/itp3914/Lab02/Ex1.java

@@ -0,0 +1,36 @@
+/*
+   Filename:	 	Ex1.java
+   Programmer:	<YOUR NAME>
+   Description:	Determine the check digit of HKID numbers.
+*/
+
+import java.util.*;
+
+public class Ex1 { // Validate HKID
+    public static void main(String[] args) {
+        Scanner kb = new Scanner(System.in);
+        System.out.print("? ");
+        String str = kb.next();
+        char[] letter;
+        int sum;
+        int code;
+        letter = str.toCharArray();
+        letter[0] = Character.toUpperCase(letter[0]);
+        sum = ((int) letter[0] - 64) * 8;
+        sum = sum + ((int) letter[1] - 48) * 7;
+        sum = sum + ((int) letter[2] - 48) * 6;
+        sum = sum + ((int) letter[3] - 48) * 5;
+        sum = sum + ((int) letter[4] - 48) * 4;
+        sum = sum + ((int) letter[5] - 48) * 3;
+        sum = sum + ((int) letter[6] - 48) * 2;
+        code = 11 - (sum % 11);
+        System.out.print("The HKID is: " + letter[0] + str.substring(1, 7));
+        if (code == 11) {
+            System.out.println("(0)");
+        } else if (code == 10) {
+            System.out.println("(A)");
+        } else {
+            System.out.println("(" + code + ")");
+        }
+    }
+}