--- a/Fahad/Scala/Chapter6.sc	Sat Nov 08 12:19:37 2014 +0000
+++ b/Fahad/Scala/Chapter6.sc	Sun Nov 09 19:14:23 2014 +0000
@@ -1,8 +1,9 @@
 package greeter
-
+
+
 object Chapter6 {
-  println("Classes and Objects")                  //> Classes and Objects
-
+  println("Classes and Objects")                  //> Classes and Objects
+
   class Rational(n: Int, d: Int) {
     private def gcd(x: Int, y: Int): Int = {
       if (x == 0) y
@@ -11,49 +12,49 @@
       else gcd(y % x, x)
     }
     private val g = gcd(n, d)
-
+
     val numer: Int = n / g
     val denom: Int = d / g
     def +(that: Rational) = new Rational(numer * that.denom + that.numer * denom, denom * that.denom)
     def -(that: Rational) = new Rational(numer * that.denom - that.numer * denom, denom * that.denom)
     def *(that: Rational) = new Rational(numer * that.numer, denom * that.denom)
     def /(that: Rational) = new Rational(numer * that.denom, denom * that.numer)
-
+
     //Inheritance and Overriding
     override def toString = "" + numer + "/" + denom
     //Parameterless Methods
     def square = new Rational(numer * numer, denom * denom)
   }
   //Inheritance and Overriding
-  var i = 1                                       //> i  : Int = 1
-  var x = new Rational(0, 1)                      //> x  : greeter.Chapter6.Rational = 0/1
+  var i = 1                                       //> i  : Int = 1
+  var x = new Rational(0, 1)                      //> x  : greeter.Chapter6.Rational = 0/1
   while (i <= 10) {
     x += new Rational(1, i)
     i += 1
   }
-  println("" + x.numer + "/" + x.denom)           //> 7381/2520
+  println("" + x.numer + "/" + x.denom)           //> 7381/2520
   //Parameterless Methods
-  val r = new Rational(3, 4)                      //> r  : greeter.Chapter6.Rational = 3/4
-  println(r.square)                               //> 9/16
-
+  val r = new Rational(3, 4)                      //> r  : greeter.Chapter6.Rational = 3/4
+  println(r.square)                               //> 9/16
+
   //Abstract Classes
   abstract class IntSet {
     def incl(x: Int): IntSet
     def contains(x: Int): Boolean
   }
-
+
   //Triats
   trait IntSett {
     def incl(x: Int): IntSet
     def contains(x: Int): Boolean
   }
-
+
   //Implementing abstract class
   class EmptySet extends IntSet {
     def contains(x: Int): Boolean = false
     def incl(x: Int): IntSet = new NonEmptySet(x, new EmptySet, new EmptySet)
   }
-
+
   class NonEmptySet(elem: Int, left: IntSet, right: IntSet) extends IntSet {
     def contains(x: Int): Boolean =
       if (x < elem) left contains x
@@ -64,5 +65,5 @@
       else if (x > elem) new NonEmptySet(elem, left, right incl x)
       else this
   }
-
-}
\ No newline at end of file
+
+}