Adding ReverseLinkedList.java file

Author: THEFZNKHAN

ReverseLinkedList.java

@@ -0,0 +1,44 @@
+class ListNode {
+    int val;
+    ListNode next;
+
+    ListNode(int val) {
+        this.val = val;
+    }
+}
+
+public class ReverseLinkedList {
+    public ListNode reverseList(ListNode head) {
+        ListNode prev = null;
+        ListNode current = head;
+
+        while (current != null) {
+            ListNode nextTemp = current.next;
+            current.next = prev;
+            prev = current;
+            current = nextTemp;
+        }
+
+        return prev;
+    }
+
+    public static void main(String[] args) {
+        // Create a sample linked list: 1 -> 2 -> 3 -> 4 -> 5
+        ListNode head = new ListNode(1);
+        head.next = new ListNode(2);
+        head.next.next = new ListNode(3);
+        head.next.next.next = new ListNode(4);
+        head.next.next.next.next = new ListNode(5);
+
+        ReverseLinkedList solution = new ReverseLinkedList();
+        ListNode reversedHead = solution.reverseList(head);
+
+        // Print the reversed linked list: 5 -> 4 -> 3 -> 2 -> 1
+        ListNode current = reversedHead;
+        while (current != null) {
+            System.out.print(current.val + " -> ");
+            current = current.next;
+        }
+        System.out.println("null");
+    }
+}