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+/**%0A * Problem: https://leetcode.com/problems/add-two-numbers/%0A * %0A * Definition for singly-linked list.%0A * public class ListNode %7B%0A *     int val;%0A *     ListNode next;%0A *     ListNode(int x) %7B val = x; %7D%0A * %7D%0A */%0Apublic class Solution %7B%0A    public ListNode addTwoNumbers(ListNode l1, ListNode l2) %7B%0A        ListNode head = new ListNode((l1.val + l2.val) %25 10);%0A        int bit = (l1.val + l2.val) / 10;%0A        ListNode node1 = l1.next;%0A        ListNode node2 = l2.next;%0A        ListNode next = head;%0A        while(node1 != null %7C%7C node2 != null %7C%7C bit %3E 0) %7B%0A            if(node1 != null) %7B%0A                bit += node1.val;%0A                node1 = node1.next;%0A            %7D%0A            if(node2 != null) %7B%0A                bit += node2.val;%0A                node2 = node2.next;%0A            %7D%0A            next.next = new ListNode(bit %25 10);%0A            next = next.next;%0A            bit /= 10;%0A        %7D%0A        return head;%0A    %7D%0A%7D%0A

Create Add_Two_Numbers.java