6 files changed, 192 insertions, 0 deletions
diff --git a/usth/ICT2.2/final/Member.java b/usth/ICT2.2/final/Member.java
new file mode 100644
index 0000000..a3e2092
--- /dev/null
+++ b/usth/ICT2.2/final/Member.java
@@ -0,0 +1,54 @@
+public class Member
+{
+  public static final String[] ROLES = {"leader", "club coordinator",
+                                        "keynote speaker of code sharing",
+                                        "product programmer"};
+
+  private String name;
+  private String time;
+  private int role;
+
+  public String getName()
+  {
+    return name;
+  }
+
+  public String getTime()
+  {
+    return time;
+  }
+
+  public int getRole()
+  {
+    return role;
+  }
+  
+  public void setName(String name)
+  {
+    this.name = name;
+  }
+  
+  public void setTime(String time)
+  {
+    this.time = time;
+  }
+  
+  public void setRole(int role) throws IllegalArgumentException
+  {
+    if (role < 0 || role > 3)
+      throw new IllegalArgumentException("invalid role number: " + role);
+    this.role = role;
+  }
+
+  public Member(String name, String time, int role)
+  {
+    setName(name);
+    setTime(time);
+    setRole(role);
+  }
+
+  public String toString()
+  {
+    return String.format("%s (%s), from %s", name, ROLES[role], time);
+  }
+}
diff --git a/usth/ICT2.2/final/Point.java b/usth/ICT2.2/final/Point.java
new file mode 100644
index 0000000..5e79428
--- /dev/null
+++ b/usth/ICT2.2/final/Point.java
@@ -0,0 +1,43 @@
+// Immutable Point
+public class Point
+{
+  private double x;
+  private double y;
+
+  public Point(double x, double y)
+  {
+    this.x = x;
+    this.y = y;
+  }
+
+  public double getX()
+  {
+    return x;
+  }
+
+  public double getY()
+  {
+    return y;
+  }
+
+  public String toString()
+  {
+    return String.format("(%g, %g)", x, y);
+  }
+
+  public static Point add(Point a, Point b)
+  {
+    return new Point(a.getX() + b.getX(), a.getY() + b.getY());
+  }
+
+  public static Point subtract(Point a, Point b)
+  {
+    return new Point(a.getX() - b.getX(), a.getY() - b.getY());
+  }
+
+  public static double calDisEuclid(Point a, Point b)
+  {
+    var trans = Point.subtract(a, b);
+    return Math.sqrt(trans.getX()*trans.getX() + trans.getY()*trans.getY());
+  }
+}
diff --git a/usth/ICT2.2/final/Problem1.java b/usth/ICT2.2/final/Problem1.java
new file mode 100644
index 0000000..a9c5e32
--- /dev/null
+++ b/usth/ICT2.2/final/Problem1.java
@@ -0,0 +1,15 @@
+import java.util.Scanner;
+
+class Problem1
+{
+  public static void main(String... args)
+  {
+    var scanner = new Scanner(System.in);
+    int n = scanner.nextInt();
+    for (int i = 1; i <= n; i += 2)
+      System.out.println(i);
+    if (n % 2 == 0)
+      n--;
+    System.out.println((n + 1) * (n + 1) / 4);
+  }
+}
diff --git a/usth/ICT2.2/final/Problem2.java b/usth/ICT2.2/final/Problem2.java
new file mode 100644
index 0000000..dcad796
--- /dev/null
+++ b/usth/ICT2.2/final/Problem2.java
@@ -0,0 +1,22 @@
+import java.util.Scanner;
+
+class Problem2
+{
+  public static void main(String... args)
+  {
+    var scanner = new Scanner(System.in);
+    System.out.println(
+        "Please enter two numbers which are the coordinate of one point:");
+    var a = new Point(scanner.nextDouble(), scanner.nextDouble());
+    System.out.println(
+        "Please enter two numbers which are the coordinate of another point:");
+    var b = new Point(scanner.nextDouble(), scanner.nextDouble());
+
+    System.out.printf("First point: %s\nSecond point: %s\n", a, b);
+    // Vector would make a better name than Point
+    System.out.printf("Their sum: %s\nTheir difference: %s\n",
+                      Point.add(a, b), Point.subtract(a, b));
+    System.out.printf("The Euclidean distance between the two points: %s\n",
+                      Point.calDisEuclid(a, b));
+  }
+}
diff --git a/usth/ICT2.2/final/Problem3.java b/usth/ICT2.2/final/Problem3.java
new file mode 100644
index 0000000..11be143
--- /dev/null
+++ b/usth/ICT2.2/final/Problem3.java
@@ -0,0 +1,40 @@
+import java.util.ArrayList;
+import java.util.Scanner;
+
+class Problem3
+{
+  public static void main(String... args)
+  {
+    var scanner = new Scanner(System.in);
+    System.out.println("Number of members:");
+    int n = scanner.nextInt();
+
+    var members = new ArrayList<Member>();
+    for (int i = 0; i < n; ++i)
+      {
+        System.out.println("Member name: ");
+        String name = scanner.next();
+        System.out.println("Member joining time: ");
+        String time = scanner.next();
+        System.out.println("Member role number: ");
+        int role = scanner.nextInt();
+        members.add(new Member(name, time, role));
+      }
+
+    var reports = new ArrayList<Report>();
+    for (var m : members)
+      {
+        System.out.println(m);
+        System.out.println("Activity: ");
+        String act = scanner.next();
+        System.out.println("Rate: ");
+        int rate = scanner.nextInt();
+        reports.add(new Report(m.getName(), act, rate));
+      }
+
+    System.out.println("Members:");
+    members.forEach(System.out::println);
+    System.out.println("Activity reports:");
+    reports.forEach(System.out::println);
+  }
+}
diff --git a/usth/ICT2.2/final/Report.java b/usth/ICT2.2/final/Report.java
new file mode 100644
index 0000000..ec4ee23
--- /dev/null
+++ b/usth/ICT2.2/final/Report.java
@@ -0,0 +1,18 @@
+public class Report
+{
+  String name;
+  String activity;
+  int rate;
+
+  public Report(String name, String act, int rate)
+  {
+    this.name = name;
+    this.activity = act;
+    this.rate = rate;
+  }
+
+  public String toString()
+  {
+    return String.format("%s: %s: %s", name, activity, rate);
+  }
+}