Add Two Numbers
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You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a linked list.
Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
Output: 7 -> 0 -> 8
/**
* Definition for singly-linked list.* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
public class Solution {
public ListNode addTwoNumbers(ListNode l1, ListNode l2) {
if(l1 == null && l2 == null){
return null;
}
ListNode ln = new ListNode(0);
ListNode tmp = ln;
int v1, v2;
while(true){
v1 = 0; v2 = 0;
if(l1 != null){
v1 = l1.val;
l1 = l1.next;
}
if(l2 != null){
v2 = l2.val;
l2 = l2.next;
}
tmp.val += v1 + v2;
if(tmp.val >= 10){
tmp.next = new ListNode(1);
tmp.val = tmp.val % 10;
}
if(l1 == null && l2 == null){
break;
}else if(tmp.next == null){
tmp.next = new ListNode(0);
}
tmp = tmp.next;
}
return ln;
}
}
0 0
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