Self-referential data structure

Programming

A self-referential structure is one of the data structures which refer to the pointer to (points) to another structure of the same type. For example, a linked list is supposed to be a self-referential data structure. The next node of a node is being pointed, which is of the same struct type.

Within the context of blockchain, each block is linked to a previous or next node, much like a linked list.

The circumstances that form the setting for an event, statement, or idea, and in terms of which it can be fully understood and assessed.

Give a sequence of brief answers with no explanation.