Created
June 30, 2019 16:25
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0021 Merge Two Sorted Lists
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/** | |
* Definition for singly-linked list. | |
* public class ListNode { | |
* int val; | |
* ListNode next; | |
* ListNode(int x) { val = x; } | |
* } | |
*/ | |
class Solution { | |
public ListNode mergeTwoLists(ListNode l1, ListNode l2) { | |
if (l1 == null) return l2; | |
if (l2 == null) return l1; | |
if (l1.val < l2.val) { | |
l1.next = mergeTwoLists(l1.next, l2); | |
return l1; | |
} else { | |
l2.next = mergeTwoLists(l1, l2.next); | |
return l2; | |
} | |
} | |
} |
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