diff --git a/week3/day1/Classroom/RemoveDuplicates.java b/week3/day1/Classroom/RemoveDuplicates.java
index 73c6f9c..142aad0 100644
--- a/week3/day1/Classroom/RemoveDuplicates.java
+++ b/week3/day1/Classroom/RemoveDuplicates.java
@@ -5,25 +5,65 @@ public class RemoveDuplicates {
 	public static void main(String[] args) {		
 		
 //		Declare a String as PayPal India
-
+String a = "PayPal India";
+		
 //		Convert it into a character array
+char[] ch= a.toCharArray();
+
+for(char c: ch) {
+	System.out.println(c);
+}
 
 //		Declare a Set as charSet for Character
+Set <Character> set = new TreeSet <Character>();
 
 //		Declare a Set as dupCharSet for duplicate Character
+Set <Character> set1 = new TreeSet <Character>();
 
 //		Iterate character array and add it into charSet
+int length = ch.length;
+		
+	for (char eachValue: ch) {
+		
 
-//		if the character is already in the charSet then, add it to the dupCharSet
 
+//		if the character is already in the charSet then, add it to the dupCharSet
+		if(set.contains(eachValue)) {
+			
+			set1.add(eachValue);
+		}else {
+			set.add(eachValue);
+		}
+			}
+		System.out.println(set);
+		System.out.println(set1);
+		
+		
 //		Check the dupCharSet elements and remove those in the charSet
-
+for(char eachText: set1) {
+	if(set.contains(eachText)) {
+		set.remove(eachText);
+	}else {
+		
+	}
+}
+	
+		
 //		Iterate using charSet
 
+	for(char check: set) {
+		
+	
 //		Check the iterator variable isn't equals to an empty space
-
+		if(check!=' ') {
+			
 //		print it
-
+		
+			System.out.println("No empty space");
+		}else {
+			System.out.println("Empty space");
+		}
+	}
+	
 	}
-
 }