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list.h
/* Implements a linked list of integers
A list is comprised of a single header and zero or moreelements. The
header contains pointers to the first and last elements in thelist,
or NULL if the list is empty. The first element contains a pointerto
the next element, and so on. The last element in the list hasits
“next” pointer set to NULL.
** Global Precondition **
Functions that operate on an existing list require a validpointer to
a list_t header as their first argument.
*/
// List
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