하루의 쉼터

Question : Merge two sorted linked lists and return it as a new sorted list. The new list should be made by splicing together the nodes of the first two lists. Example 1 : Input: l1 = [1,2,4], l2 = [1,3,4] Output: [1,1,2,3,4,4] Example 2 : Input: l1 = [], l2 = [] Output: [] Example 3 : Input: l1 = [], l2 = [0] Output: [0] Constraints : The number of nodes in both lists is in the range [0, 50] -1..