What is the time complexity of inserting an element at the beginning of a linked list?

Inserting an element at the beginning of a linked list is a common operation in computer programming, especially for dynamic data structures that require frequent updates. The time complexity of this operation depends on the length of the linked list, as well as the implementation of the data structure. In a singly linked list, where each node only has a reference to the next node, inserting an element at the beginning of the list requires creating a new node and setting its "next" reference to the current head o....