Easy · Linked Lists
Merge two sorted lists
Given the heads of two linked lists l1 and l2, each sorted in non-decreasing order, splice their nodes together into one sorted linked list and return its head.
Examples
Example 1
[1,2,4] + [1,3,4]Output: [1,1,2,3,4,4]
Example 2
[1,3,5,7] + [2,4]Output: [1,2,3,4,5,7]
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