[Edwin] iP

src/main/java/Circle.java

@@ -0,0 +1,48 @@
+public class Circle {
+    private int x;
+    private int y;
+    private double radius;
+    private static double maxRadius = 0;
+
+    public Circle(){
+        this(0, 0, 0);
+    }
+
+    public Circle(int x, int y, double radius){
+        setX(x);
+        setY(y);
+        setRadius(radius);
+    }
+
+    public int getX() {
+        return x;
+    }
+    public void setX(int x) {
+        this.x = x;
+    }
+    public int getY() {
+        return y;
+    }
+
+    public void setY(int y) {
+        this.y = y;
+    }
+
+    public double getRadius() {
+        return radius;
+    }
+
+    public void setRadius(double radius) {
+        this.radius = Math.max(radius, 0);
+        if (maxRadius < this.radius){
+            maxRadius = this.radius;
+        }
+    }
+    public static double getMaxRadius() {
+        return maxRadius;
+    }
+    public int getArea(){
+        double area = Math.PI * Math.pow(radius, 2);
+        return (int)area;
+    }
+}

src/main/java/Duke.java

@@ -1,10 +1,53 @@
+import java.util.Scanner;
+
 public class Duke {
+    private static Task[] items = new Task[100];
+    private static int taskCount = 0;
+
     public static void main(String[] args) {
         String logo = " ____        _        \n"
                 + "|  _ \\ _   _| | _____ \n"
                 + "| | | | | | | |/ / _ \\\n"
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
-        System.out.println("Hello from\n" + logo);
+        String border = "____________________________________________________________\n";
+        System.out.println(border + "Hi bro, my name is Echo");
+        System.out.println("What do you want?\n" + border);
+        System.out.println("Type bye to exit\n" + border);
+        String line;
+
+        do {
+            Scanner in = new Scanner(System.in);
+            line = in.nextLine();
+            if (line.matches("list")) {
+                int j = 1;
+                System.out.println(border);
+                for (Task item : items) {
+                    if (item != null) {
+                        System.out.println(j + ".[" + item.getStatusIcon() + "] " + item.getDescription());
+                        j++;
+                    }
+                }
+                System.out.println(border);
+
+            } else if (line.contains("done")) {
+                int dividerPosition = line.indexOf(" ") + 1;
+                int endPosition = line.length();
+                if (endPosition > 5) {
+                    String num = line.substring(dividerPosition, endPosition);
+                    int taskNum = Integer.parseInt(num) - 1;
+                    items[taskNum].markDone();
+                    System.out.println(border + "Nice! task is done " + '\n' + border);
+                }
+            } else if (!line.matches("bye")) {
+                System.out.println(border + "added: " + line + '\n' + border);
+                Task newItem = new Task(line);
+                items[taskCount] = newItem;
+                taskCount++;
+            }
+        }
+        while (!line.matches("bye"));
+        System.out.println(border);
+        System.out.println("chat again next time!\n" + border);
     }
 }

src/main/java/Main.java

@@ -0,0 +1,47 @@
+
+import java.util.Arrays;
+import java.util.Scanner;
+
+public class Main {
+
+    // You can add more methods here
+    public static String[] filter(String[] items){
+        String[] results = new String[items.length];
+        int matchCount = 0;
+        for(String item: items){
+            if (item.contains("$")){
+                results[matchCount] = item;
+                matchCount++;
+            }
+        }
+        return Arrays.copyOf(results, matchCount);
+    }
+
+    public static double totalExpenses(String[] prices) {
+       double total = 0;
+        for (String price : prices) {
+            total += Double.parseDouble(price.trim().replace("$"," "));
+        }
+        return total;
+    }
+    public static double exchangeRate(double overseas) {
+        return overseas * 1.70;
+    }
+    public static String[] splitSentence(String sentence) {
+        return sentence.split(" ");
+    }
+
+    public static void main(String[] args) {
+        String line;
+        Scanner in = new Scanner(System.in);
+
+        System.out.print("Your expenses while overseas?");
+        // TODO: add your code here
+        line = in.nextLine();
+        String[] amounts = filter(splitSentence(line));
+        System.out.print("Expenses in overseas currency:");
+        System.out.println(Arrays.toString(amounts));
+        System.out.print("Total in local currency: ");
+        System.out.println("$" + String.format("%.2f", exchangeRate(totalExpenses(amounts))));
+    }
+}

src/main/java/Task.java

@@ -0,0 +1,21 @@
+public class Task {
+    protected String description;
+    protected boolean isDone;
+
+    public Task(String description) {
+        this.description = description;
+        this.isDone = false;
+    }
+
+    public String getStatusIcon() {
+        return (isDone ? "X" : " "); // mark done task with X
+    }
+    public String getDescription() {
+        return this.description;
+    }
+
+    public void markDone() {
+        this.isDone = true;
+    }
+    //...
+}