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hat is a linked list?

A link list is a data structure which overcomes the problem associated with arrays (i.e. fixed size).
The size of a link list can be manipulated dynamically. Where conventional lists arrange information
in a linear sequence, linked lists are able to manage discontinuous bits of information through the
use of pointers that link them together. This allows users (or list managers) to insert new pieces of
information at any point in the list without having to disturb any of the existing pieces by merely
adjusting pointers to link to the new value.

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