AddTwoNumbersusinglinked.java

public class AddTwoNumbersusinglinked {
    public static void main(String[] args) {
        ListNode l1 = new ListNode(2, new ListNode(4, new ListNode(3)));
        ListNode l2 = new ListNode(5, new ListNode(6, new ListNode(4)));

        // Calling the addTwoNumbers method and printing the result
        ListNode result = addTwoNumbers(l1, l2);
        printList(result);
    }
    public static void printList(ListNode head) {
        while (head != null) {
            System.out.print(head.val + " ");
            head = head.next;
        }
    }
    public static ListNode addTwoNumbers(ListNode l1, ListNode l2) {
        ListNode temp = new ListNode(0);
        ListNode current = temp;
        int carry = 0;

        while (l1 != null || l2 != null || carry > 0) {
            if (l1 != null) {
                carry += l1.val;
                l1 = l1.next;
            }
            if (l2 != null) {
                carry += l2.val;
                l2 = l2.next;
            }
            current.next = new ListNode(carry % 10);
            carry /= 10;
            current = current.next;
        }

        return temp.next;
    }
}