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[Leetcode] Add Two Numbers
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
Solution:
1 /** 2 * Definition for singly-linked list. 3 * public class ListNode { 4 * int val; 5 * ListNode next; 6 * ListNode(int x) { 7 * val = x; 8 * next = null; 9 * }10 * }11 */12 public class Solution {13 public ListNode addTwoNumbers(ListNode l1, ListNode l2) {14 ListNode result=new ListNode(-1);15 ListNode cur=result;16 int carry=0;17 while(l1!=null&&l2!=null){18 int temp=l1.val+l2.val+carry;19 carry=temp/10;20 temp%=10;21 cur.next=new ListNode(temp);22 cur=cur.next;23 l1=l1.next;24 l2=l2.next;25 }26 while(l1!=null){27 int temp=l1.val+carry;28 carry=temp/10;29 temp%=10;30 cur.next=new ListNode(temp);31 cur=cur.next;32 l1=l1.next;33 }34 while(l2!=null){35 int temp=l2.val+carry;36 carry=temp/10;37 temp%=10;38 cur.next=new ListNode(temp);39 cur=cur.next;40 l2=l2.next;41 }42 if(carry!=0){43 cur.next=new ListNode(carry);44 }45 return result.next;46 }47 }
[Leetcode] Add Two Numbers
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