{ "data": { "question": { "questionId": "21", "questionFrontendId": "21", "categoryTitle": "Algorithms", "boundTopicId": 1080, "title": "Merge Two Sorted Lists", "titleSlug": "merge-two-sorted-lists", "content": "
You are given the heads of two sorted linked lists list1
and list2
.
Merge the two lists into one sorted list. The list should be made by splicing together the nodes of the first two lists.
\n\nReturn the head of the merged linked list.
\n\n\n
Example 1:
\n\n\nInput: list1 = [1,2,4], list2 = [1,3,4]\nOutput: [1,1,2,3,4,4]\n\n\n
Example 2:
\n\n\nInput: list1 = [], list2 = []\nOutput: []\n\n\n
Example 3:
\n\n\nInput: list1 = [], list2 = [0]\nOutput: [0]\n\n\n
\n
Constraints:
\n\n[0, 50]
.-100 <= Node.val <= 100
list1
and list2
are sorted in non-decreasing order.将两个升序链表合并为一个新的 升序 链表并返回。新链表是通过拼接给定的两个链表的所有节点组成的。
\n\n\n\n
示例 1:
\n\n\n输入:l1 = [1,2,4], l2 = [1,3,4]\n输出:[1,1,2,3,4,4]\n\n\n
示例 2:
\n\n\n输入:l1 = [], l2 = []\n输出:[]\n\n\n
示例 3:
\n\n\n输入:l1 = [], l2 = [0]\n输出:[0]\n\n\n
\n\n
提示:
\n\n[0, 50]
-100 <= Node.val <= 100
l1
和 l2
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