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Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.
经典实现题。
/**
* Definition for singly-linked list.
* public class ListNode {
* int val;
* ListNode next;
* ListNode(int x) { val = x; }
* }
*/
public class Solution {
public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
ListNode head = new ListNode(0);
ListNode tmp = head;
while (l1 != null && l2 != null) {
if (l1.val < l2.val) {
tmp.next = l1;
l1 = l1.next;
} else {
tmp.next = l2;
l2 = l2.next;
}
tmp = tmp.next;
}
if (l1 != null) {
tmp.next = l1;
} else {
tmp.next = l2;
}
return head.next;
}
}
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原文地址:http://www.cnblogs.com/shini/p/4499294.html