diff --git a/BubbleSort.java b/BubbleSort.java
index 077561b..c7a4a13 100644
--- a/BubbleSort.java
+++ b/BubbleSort.java
@@ -1,30 +1,25 @@
 import java.lang.*;
-public class BubbleSort{
-    public static void main(String arg[])
-    {
+
+public class BubbleSort {
+    public static void main(String arg[]) {
         int a[]={30,60,35,20,45,32,50};
         System.out.println("Array Before Sorting");
-        for(int i=0;i<a.length;i++)
-        {
+        for(int i=0;i<a.length;i++) {
             System.out.print(a[i]+" ");
         }
         System.out.println();
         bubbleSort(a);
         System.out.println("Array after sorting");
-        for(int i=0;i<a.length;i++)
-        {
+        for(int i=0;i<a.length;i++) {
             System.out.print(a[i]+" ");
         }
     }
-    static void bubbleSort(int[] a){
+    static void bubbleSort(int[] a) {
         int n = a.length;
         int t = 0;
-        for(int i=0;i<n;i++)
-        {
-            for(int j=1;j<n-i;j++)
-            {
-                if(a[j-1]>a[j])
-                {
+        for(int i=0;i<n;i++) {
+            for(int j=1;j<n-i;j++) {
+                if(a[j-1]>a[j]) {
                     t = a[j-1];
                     a[j-1] = a[j];
                     a[j]= t;
@@ -32,4 +27,4 @@ static void bubbleSort(int[] a){
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/Echo.java b/Echo.java
index 7b96259..6b5f764 100644
--- a/Echo.java
+++ b/Echo.java
@@ -1,13 +1,10 @@
-class Echo
-{
-    public static void main(String args[])
-    {
-        for(int i=0;i<args.length;i++)
-        {
+class Echo  {
+    public static void main(String args[])  {
+        for(int i=0;i<args.length;i++)  {
              System.out.print(args[i]+" ");
              System.out.println("\n");
-            }
-            System.exit(0);
         }
+        System.exit(0);
     }
-    
\ No newline at end of file
+}
+    
diff --git a/Fibonacci.java b/Fibonacci.java
index c963b59..657803a 100644
--- a/Fibonacci.java
+++ b/Fibonacci.java
@@ -1,16 +1,18 @@
-class FibonacciExample1{
-public static void main(String args[])
-{  
- int n1=0,n2=1,n3,i,count=10;  
- System.out.print(n1+" "+n2);//printing 0 and 1  
-  
- for(i=2;i<count;++i)//loop starts from 2 because 0 and 1 are already printed  
- {  
-  n3=n1+n2;  
-  System.out.print(" "+n3);  
-  n1=n2;  
-  n2=n3;  
- }  
-
-}}
+class FibonacciSeries {
+  public static void main(String args[])
+  {
+    int n1=0,n2=1,n3,i,count=10;
+    
+    //printing 0 and 1
+    System.out.print(n1+" "+n2);
+    
+    //loop starts from 2 because 0 and 1 are already printed  
+    for(i=2;i<count;++i)  {
+      n3=n1+n2;
+      System.out.print(" "+n3);  
+      n1=n2;  
+      n2=n3;
+    }
+  }
+}
 
diff --git a/Harry.java b/Harry.java
index 9d5abf0..2eef3ea 100644
--- a/Harry.java
+++ b/Harry.java
@@ -1,9 +1,7 @@
-class Harry
-{
-public static void main(String args[])
-{
-int i=0;
-i=Integer.parseInt(args[0]);
-System.out.println("The value of i in Integer is"+i);
+class Harry {
+  public static void main(String args[]) {
+    int i = 0;
+    i = Integer.parseInt(args[0]);
+    System.out.println("The value of i in Integer is"+i);
+  }
 }
-}
\ No newline at end of file
diff --git a/QuickSort.java b/QuickSort.java
index 7edf9ef..d3f8378 100644
--- a/QuickSort.java
+++ b/QuickSort.java
@@ -1,62 +1,48 @@
-class QuickSort
-{
-	public static void main(String[]args)
-	{
+class QuickSort	{
+	public static void main(String[]args)	{
 		int a[]={10,75,-15,17,0,-2};
 		QSort(a,0,a.length-1);
 		System.out.println("Sorted Array : ");
-        System.out.print("[");
-		for(int i=0;i<a.length;i++)
-		{
-            if(i == a.length-1)
-			    System.out.print(a[i]);
-            else
-                System.out.print(a[i] + ", ");
-		}
-        System.out.println("]");
+    System.out.print("[");
+		for(int i=0;i<a.length;i++)	{
+			if(i == a.length-1)
+				System.out.print(a[i]);
+      else
+        System.out.print(a[i] + ", ")
+			}
+      System.out.println("]");
 	}
-
-	public static void QSort(int a[],int l,int h)
-	{
-		if(l<h)
-		{
+	
+	public static void QSort(int a[],int l,int h) {
+		if(l<h)	{
 			int loc=Partion(a,l,h);
 			QSort(a,l,loc-1);
 			QSort(a,loc+1,h);
 		}
 	}
 
-	public static int Partion(int a[],int l,int h)
-	{
+	public static int Partion(int a[],int l,int h)	{
 		int pivot = a[l];
 		int start=l;
 		int end=h;int tmp;
 
-		while(start < end)
-		{
-			while(start<=h && a[start]<=pivot)
-			{
+		while(start < end)	{
+			while(start<=h && a[start]<=pivot)	{
 				start++;
 			}
-			while(a[end]>pivot)
-			{
+			while(a[end]>pivot)	{
 				end--;
 			}
-			if(start<end)
-			{
+			if(start<end)	{
 				tmp=a[start];
 				a[start]=a[end];
 				a[end]=tmp;
-				
-				
 			}
-
 		}
-
 		
 		tmp=a[l];
 		a[l]=a[end];
 		a[end]=tmp;
 		return end;
 	}	
-}
\ No newline at end of file
+}
diff --git a/ShellSort.java b/ShellSort.java
index f7a86c4..1dc9b79 100644
--- a/ShellSort.java
+++ b/ShellSort.java
@@ -1,37 +1,29 @@
-public class ShellSort
-{
-	public static void main(String[] args) 
-	{
+public class ShellSort	{
+	public static void main(String[] args) {
 		int a[]={25,-17,8,92,-21,0};
 
-		for(int gap=a.length/2;gap>0;gap/=2)
-		{
-
-			for(int i=gap;i<a.length;i++)
-			{
+		for(int gap=a.length/2;gap>0;gap/=2)	{
+			for(int i=gap;i<a.length;i++)	{
 				int tmp=a[i];
 				int j=i;
 
-				while(j>=gap &&a[j-gap]>tmp)
-				{
+				while(j>=gap &&a[j-gap]>tmp)	{
 					a[j]=a[j-gap];
 					j-=gap;
 				}
 				a[j]=tmp;
-
 			}
 		}
-
-        System.out.println("Sorted Array : ");
-        System.out.print("[");
-		for(int i=0;i<a.length;i++)
-		{
-            if(i == a.length-1)
-			    System.out.print(a[i]);
-            else
-                System.out.print(a[i] + ", ");
+		
+		System.out.println("Sorted Array : ");
+    System.out.print("[");
+		
+		for(int i=0;i<a.length;i++)	{
+			if(i == a.length-1)
+				System.out.print(a[i]);
+      else
+				System.out.print(a[i] + ", ");
 		}
         System.out.println("]");
 	}	
-	
-}
\ No newline at end of file
+}
diff --git a/armstrongNumber.java b/armstrongNumber.java
new file mode 100644
index 0000000..3079887
--- /dev/null
+++ b/armstrongNumber.java
@@ -0,0 +1,41 @@
+// Program to determine whether the number is Armstrong number or not
+public class Armstrong {
+	// Function to calculate x raised to the power y
+	int power(int x, long y) {
+		if( y == 0)
+			return 1;
+		if (y%2 == 0)
+			return power(x, y/2)*power(x, y/2);
+		return x*power(x, y/2)*power(x, y/2);
+	}
+
+	// Function to calculate order of the number
+	int order(int x) {
+		int n = 0;
+		while (x != 0) {
+			n++;
+			x = x/10;
+		}
+		return n;
+	}
+  
+	boolean isArmstrong (int x) {
+		// Calling order function
+		int n = order(x);
+		int temp=x, sum=0;
+		while (temp!=0) {
+			int r = temp%10;
+			sum = sum + power(r,n);
+			temp = temp/10;
+		}
+		return (sum == x);
+	}
+  
+	public static void main(String[] args) {
+		Armstrong ob = new Armstrong();
+		int x = 153;
+		System.out.println(ob.isArmstrong(x));
+		x = 1253;
+		System.out.println(ob.isArmstrong(x));
+	}
+}