chore: push

src/main/java/me/alex4386/gachon/sw14462/Main.java

@@ -5,7 +5,7 @@
 import java.util.*;
 
 public class Main {
-    public static String currentTarget = "day09";
+    public static String currentTarget = "day10";
     public static boolean fallbackToLatest = true;
 
     public static Map<String, Class<?>> getAvailableTargetClassNames() {

src/main/java/me/alex4386/gachon/sw14462/day10/DimensionConverter.java

@@ -0,0 +1,17 @@
+package me.alex4386.gachon.sw14462.day10;
+
+/**
+ Class of static methods to perform dimension conversions.
+ */
+public class DimensionConverter
+{
+    public static final int INCHES_PER_FOOT = 12;
+    public static double convertFeetToInches(double feet)
+    {
+        return feet * INCHES_PER_FOOT;
+    }
+    public static double convertInchesToFeet(double inches)
+    {
+        return inches / INCHES_PER_FOOT;
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/DimensionConverterDemo.java

@@ -0,0 +1,25 @@
+package me.alex4386.gachon.sw14462.day10;
+
+import java.util.Scanner;
+
+/**
+ Demonstration of using the class DimensionConverter.
+ */
+public class DimensionConverterDemo
+{
+    public static void main(String[] args)
+    {
+        Scanner keyboard = new Scanner(System.in);
+        System.out.println("Enter a measurement in inches: ");
+        double inches = keyboard.nextDouble();
+        double feet =
+                DimensionConverter.convertInchesToFeet(inches);
+        System.out.println(inches + " inches = " +
+                feet + " feet.");
+        System.out.print("Enter a measurement in feet: ");
+        feet = keyboard.nextDouble();
+        inches = DimensionConverter.convertFeetToInches(feet);
+        System.out.println(feet + " feet = " +
+                inches + " inches.");
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/Main.java

@@ -0,0 +1,18 @@
+package me.alex4386.gachon.sw14462.day10;
+
+import me.alex4386.gachon.sw14462.utils.Chainloader;
+
+public class Main {
+    public static String chainloadTarget = "ex6_1b";
+
+    public static void main(String[] args) throws Throwable {
+        String packageName = Main.class.getPackage().getName();
+        String chainLoadTargetClass = packageName + "." + chainloadTarget + ".Main";
+
+        try {
+            Chainloader.chainloadTarget(chainLoadTargetClass, args);
+        } catch (Exception e) {
+            throw e;
+        }
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1a/Main.java

@@ -0,0 +1,7 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1a;
+
+public class Main {
+    public static void main(String[] args) {
+        TimeTest.main(args);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1a/Time.java

@@ -0,0 +1,35 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1a;
+
+public class Time {
+    private int hours;
+    private int minute;
+
+    public Time() {
+        this.hours = 0;
+        this.minute = 0;
+    }
+
+    public static boolean isValid(int hours, int minute) {
+        return (hours >= 0 && hours <= 23) &&
+                (minute >= 0 && minute <= 59);
+    }
+
+    public void setTime(int hours, int minute) {
+        if (Time.isValid(hours, minute)) {
+            this.hours = hours;
+            this.minute = minute;
+        }
+    }
+
+    public void setTime2(int hours, int minute, boolean isPM) {
+        // seems not intended when PM=true and hours=12,
+        // but it's not mentioned in the requirement
+        int hours24 = hours + (isPM ? 12 : 0);
+        this.setTime(hours24, minute);
+    }
+
+    @Override
+    public String toString() {
+        return String.format("%02d:%02d", this.hours, this.minute);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1a/TimeTest.java

@@ -0,0 +1,32 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1a;
+
+public class TimeTest {
+    public static void main(String[] args) {
+        Time time = new Time();
+
+        System.out.println("Test scenario 1: valid time (12:49)");
+        boolean result = Time.isValid(12, 49);
+        System.out.println("Expected: true");
+        System.out.println("Actual: " + result);
+
+        System.out.println("Test scenario 2: invalid time (24:00)");
+        result = Time.isValid(24, 0);
+        System.out.println("Expected: false");
+        System.out.println("Actual: " + result);
+
+        System.out.println("Test scenario 3: invalid time (12:60)");
+        result = Time.isValid(12, 60);
+        System.out.println("Expected: false");
+        System.out.println("Actual: " + result);
+
+        System.out.println("Test scenario 4: Setting time with setTime (05:49)");
+        time.setTime(5, 49);
+        System.out.println("Expected: 05:49");
+        System.out.println("Actual: " + time.toString());
+
+        System.out.println("Test scenario 5: Setting time with setTime2 (05:49 PM)");
+        time.setTime2(5, 49, true);
+        System.out.println("Expected: 17:49");
+        System.out.println("Actual: " + time.toString());
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1b/Main.java

@@ -0,0 +1,7 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1b;
+
+public class Main {
+    public static void main(String[] args) {
+        RoomTest.main(args);
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1b/RoomOccupancy.java

@@ -0,0 +1,32 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1b;
+
+public class RoomOccupancy {
+    private int roomNumber;
+    private int peopleInRoom;
+    private static int totalPeople = 0;
+
+    public RoomOccupancy(int roomNumber, int peopleInRoom) {
+        this.roomNumber = roomNumber;
+        this.peopleInRoom = peopleInRoom;
+    }
+
+    public void addOneToRoom() {
+        this.peopleInRoom++;
+        totalPeople++;
+    }
+
+    public void removeOneFromRoom() {
+        if (this.peopleInRoom > 0 && totalPeople > 0) {
+            this.peopleInRoom--;
+            totalPeople--;
+        }
+    }
+
+    public int getNumber() {
+        return this.roomNumber;
+    }
+
+    public static int getTotal() {
+        return totalPeople;
+    }
+}

src/main/java/me/alex4386/gachon/sw14462/day10/ex6_1b/RoomTest.java

@@ -0,0 +1,33 @@
+package me.alex4386.gachon.sw14462.day10.ex6_1b;
+
+public class RoomTest {
+    public static void main(String[] args) {
+        RoomOccupancy room1 = new RoomOccupancy(101, 0);
+        RoomOccupancy room2 = new RoomOccupancy(102, 0);
+
+        System.out.println("Initial state:");
+        System.out.println("Room " + room1.getNumber() + " has " + room1.getTotal() + " people.");
+        System.out.println("Room " + room2.getNumber() + " has " + room2.getTotal() + " people.");
+
+        System.out.println("Adding 1 person to room1:");
+        room1.addOneToRoom();
+
+        System.out.println("Adding 2 people to room2:");
+        room2.addOneToRoom();
+        room2.addOneToRoom();
+
+        System.out.println("Expected behavior: since RoomOccupancy#getTotal() returns static variable totalPeople:");
+        System.out.println("                   Both rooms should have 3 people.");
+
+        System.out.println("Room " + room1.getNumber() + " has " + room1.getTotal() + " people.");
+        System.out.println("Room " + room2.getNumber() + " has " + room2.getTotal() + " people.");
+
+        System.out.println("Removing 1 person from each room:");
+        room1.removeOneFromRoom();
+        room2.removeOneFromRoom();
+
+        System.out.println("Final state (after removing 1 person from each room):");
+        System.out.println("Room " + room1.getNumber() + " has " + room1.getTotal() + " people.");
+        System.out.println("Room " + room2.getNumber() + " has " + room2.getTotal() + " people.");
+    }
+}