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Solution.java
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34 lines (31 loc) · 786 Bytes
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package leetCode_2;
/**
* 优雅的解法<br/>
* @author dimdark
* @date 2017-04-18
* @time 8:07 PM
*/
public class Solution {
public ListNode addTwoNumbers(ListNode l1, ListNode l2){
ListNode sentinel = new ListNode(0);
ListNode preResult = sentinel;
int sum = 0;
while (l1!=null || l2!=null){
sum /= 10;
if(l1!=null){
sum += l1.val;
l1 = l1.next;
}
if(l2!=null){
sum += l2.val;
l2 = l2.next;
}
sentinel.next = new ListNode(sum%10);
sentinel = sentinel.next;
}
if(sum/10 == 1){
sentinel.next = new ListNode(sum/10);
}
return preResult.next;
}
}