Which condition guarantees that a doubly linked list with head and
tail nodes is empty?

a. head==NULL
b. tail==NULL
c. head==tail
d. head->next==tail->prev
e. none of the above

D

Computer Science & Information Technology

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When a program needs to save data for later use, it writes the data to a(n) __________.

Fill in the blank(s) with the appropriate word(s).

Computer Science & Information Technology