The mergeTwoLists function in this C++ solution takes two sorted linked lists as input and constructs a new sorted linked list by iteratively merging nodes from the input lists. Using a dummy node for simplicity, the function efficiently splices together nodes, ensuring the merged list remains sorted in non-decreasing order.
The mergeTwoLists function in this C++ solution takes two sorted linked lists as input and constructs a new sorted linked list by iteratively merging nodes from the input lists. Using a dummy node for simplicity, the function efficiently splices together nodes, ensuring the merged list remains sorted in non-decreasing order.