20170067branch

GitAssignmentObserver.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <output url="file://$MODULE_DIR$/bin" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="jdk" jdkName="1.8" jdkType="JavaSDK" />
+  </component>
+</module>

src/BallVolume.java

@@ -0,0 +1,22 @@
+/**
+ *
+ * @author Eman Ayman Khalaf 20170067
+ */
+import java.util.Scanner;
+
+public class BallVolume implements ISubscriber {
+
+    public  BallVolume(){
+
+    }
+
+    @Override
+    public void notifySubscriber(String input) {
+        int radius= Integer.parseInt(input);
+        double pie=3.14285714286;
+        double volume=(4.0/3.0)*pie*(radius*radius*radius); // the volume of ball
+        System.out.println("Volume of the sphere="+volume);
+    }
+
+}
+

src/CircleArea.java

@@ -0,0 +1,12 @@
+import java.util.Scanner;
+
+public class CircleArea implements ISubscriber
+{
+	@Override
+	public void notifySubscriber(String input){
+           int r = Integer.parseInt(input);
+        double pi = 3.14, area;
+        area = pi * r * r;
+        System.out.println("Area of circle: "+ area);
+        }
+}

src/CircleCircumference.java

@@ -0,0 +1,27 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+
+/**
+ *
+ * @author Nour-Alhoda Khalid
+ */
+public class CircleCircumference implements ISubscriber {
+
+    public CircleCircumference() {
+
+    }
+
+    @Override
+	public void notifySubscriber(String input){
+           double x= Double.parseDouble(input);
+           double y=2*3.14*x;
+            System.out.print("the circumference equals ");
+            System.out.println(y);
+        }
+
+
+}

src/Fibonacci.java

@@ -0,0 +1,21 @@
+package main;
+
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+/**
+ *
+ * @author m_h
+ */
+public class Fibonacci implements ISubscriber {
+   @Override
+   public  void notifySubscriber(long n) {
+      if ((n == 0) || (n == 1))
+         System.out.println("Fibonacci of "+ n + " = " + n );
+      else
+         System.out.println("Fibonacci of " + n + " = " + Get_Fibonacci(n - 1) + Get_Fibonacci(n - 2));
+   }
+}

src/Main.java

@@ -1,9 +1,25 @@
+
 import java.util.Scanner;
 
 public class Main {
-	private static ISubscriber subscribers [] = {
+	private static final ISubscriber subscribers [] = {
 			new SimpleSubscriber(),
+
 			new ReallySimpleSubscriber(),
+
+			new CircleCircumference(),
+			new SphereVolume(),
+			new BallVolume(),
+            		new SummationSeries(),
+            		new MultiplicationSeries(),
+			new CircleArea(),
+			new TwoPowerN()
+
+
+
+
+
+
 	};
 	public static void main(String[] args) {
 		Topic mathTopic = new Topic();
@@ -15,3 +31,4 @@ public static void main(String[] args) {
 		mathTopic.dispatchEvent(input);
 	}
 }
+

src/MultiplicationSeries.java

@@ -0,0 +1,14 @@
+import java.math.BigDecimal;
+
+public class MultiplicationSeries implements ISubscriber {
+
+	@Override
+	public void notifySubscriber(String input) {
+		BigDecimal output=new BigDecimal("1");
+		for (int i = Integer.parseInt(input); i > 0; i--) {
+			output=output.multiply(BigDecimal.valueOf(i));
+		}
+		System.out.println("MultiplicationSeries : "+output);
+	}
+
+}

src/SummationSeries.java

@@ -0,0 +1,35 @@
+public class SummationSeries implements ISubscriber
+{ 
+    public SummationSeries() {
+}
+
+    int factorial(int t)
+    {
+        int mul = 1;
+
+        while(t > 0)
+        {
+            mul = mul * t;
+
+            t--;
+        }
+        return mul;
+    }
+
+
+
+    @Override
+    public void notifySubscriber(String input) 
+    {
+        double y = 0;
+        int x=Integer.parseInt(input);
+
+        SummationSeries mSummationSeries = new SummationSeries();
+        for(int i = 1; i <= x; i++)
+        {
+            y = y + (double)i / (mSummationSeries.factorial(i));
+        }
+        System.out.println("Summation Series: "+y);
+    }
+
+}

src/TwoPowerN.java

@@ -0,0 +1,15 @@
+import java.lang.Math; 
+
+public class TwoPowerN implements ISubscriber
+{
+
+	@Override
+	public void notifySubscriber(String input)
+	{
+
+        double n= Double.parseDouble(input);
+
+		System.out.println("2 power " + input  + " equals " + Math.pow(2,n));
+	}
+
+}