[Wang Silang] iP

src/main/java/Duke.java

@@ -1,3 +1,6 @@
+import java.util.Arrays;
+import java.util.Scanner;
+
 public class Duke {
     public static void main(String[] args) {
         String logo = " ____        _        \n"
@@ -6,5 +9,79 @@ public static void main(String[] args) {
                 + "| |_| | |_| |   <  __/\n"
                 + "|____/ \\__,_|_|\\_\\___|\n";
         System.out.println("Hello from\n" + logo);
+        greetLine();
+        addList();
+        exitLine();
+    }
+    public static void greetLine(){
+        System.out.println("How may I be of service?");
+    }
+    public static void echo()
+    {
+        String line;
+        Scanner in = new Scanner(System.in);
+        line = in.nextLine();
+        while(!line.equals("bye")) {
+            System.out.println(line);
+            line = in.nextLine();
+        }
+    }
+    public static void exitLine(){
+        System.out.println("Glad I could be of help!");
+    }
+
+    public static void addList()
+    {
+        String[] list = new String[100];
+        String line;
+        Scanner in = new Scanner(System.in);
+        line = in.nextLine();
+        int numOfItems = 0;
+        while(!line.equals("bye")) {
+            if(line.equals("list")) { // users wants to know all text so far
+                printCurrentList(list, numOfItems);
+            }
+            else if(line.startsWith("mark")){
+                mark(line, list);
+                printCurrentList(list, numOfItems);
+            }
+            else if(line.startsWith("unmark")){
+                unmark(line,list);
+                printCurrentList(list, numOfItems);
+            }
+            else { // text from user
+                String item = (numOfItems + 1) + ".[ ] " + line; // convert to 1-based
+                list[numOfItems] = item;
+                ++numOfItems;
+            }
+            line = in.nextLine(); // read in next line of text
+        }
+    }
+
+    public static void mark(String task, String[] list)
+    {
+        String locationOfTask = task.substring(5); // get the number of task to be marked
+        String taskToBeMarked = list[Integer.parseInt(locationOfTask) - 1];
+        String taskMarked = taskToBeMarked.replace("[ ]", "[X]");
+        list[Integer.parseInt(locationOfTask) - 1] = taskMarked;
+        System.out.println("Sir, your task has been marked as completed.");
+    }
+
+    public static void unmark(String task, String[] list)
+    {
+        String locationOfTask = task.substring(7);
+        String taskToBeUnmarked = list[Integer.parseInt(locationOfTask) - 1];
+        String taskUnmarked = taskToBeUnmarked.replace("[X]", "[ ]");
+        list[Integer.parseInt(locationOfTask) - 1] = taskUnmarked;
+        System.out.println("Sir, your task has been unmarked as requested.");
+    }
+
+    public static void printCurrentList(String[] list, int numOfItems)
+    {
+        String[] subList = Arrays.copyOf(list, numOfItems);
+        for(int i = 0; i < subList.length; ++i)
+        {
+            System.out.println(subList[i]);
+        }
     }
 }