Merge pull request #2 from krithikgokuls/krithikgokuls-patch-2

Create Routine Data Manipulation.java

Author: krithikgokuls

Routine Data Manipulation.java

@@ -0,0 +1,34 @@
+import java.util.Collections;
+import java.util.ArrayList;
+
+class Main {
+    public static void main(String[] args) {
+        // Creating an ArrayList
+        ArrayList<Integer> numbers = new ArrayList<>();
+        numbers.add(1);
+        numbers.add(2);
+        System.out.println("ArrayList1: " + numbers);
+
+        // Using reverse()
+        Collections.reverse(numbers);
+        System.out.println("Reversed ArrayList1: " + numbers);
+
+        // Using swap()
+        Collections.swap(numbers, 0, 1);
+        System.out.println("ArrayList1 using swap(): " + numbers);
+
+        ArrayList<Integer> newNumbers = new ArrayList<>();
+
+        // Using addAll
+        newNumbers.addAll(numbers);
+        System.out.println("ArrayList2 using addAll(): " + newNumbers);
+
+        // Using fill()
+        Collections.fill(numbers, 0);
+        System.out.println("ArrayList1 using fill(): " + numbers);
+
+        // Using copy()
+        Collections.copy(newNumbers, numbers);
+        System.out.println("ArrayList2 using copy(): " + newNumbers);
+    }
+}