Which statement is false?
a. Linked lists are collections of data items "lined up in a row"-- insertions and deletions can be made anywhere in a linked list.
b. Insertions and deletions are made only at one end of a stack, its top.
c. Insertions and deletions are made only at one end of a queue, its tail.
d. Binary trees facilitate high-speed searching and sorting of data.
c. Insertions and deletions are made only at one end of a queue, its tail. Actually, in a queue, insertions are made at the tail and deletions are made at the head.
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If you have already removed a character (in char variable ch) from the input stream, you can apply a member function of cin to the variable ch to return it to the input stream. Which of these does this task?
a)``` cin.get(ch); ``` b)``` cin.put(ch); ``` c)``` cin.peek(ch); ``` d)``` cin.putback(ch); ```
Sometimes styles with common formatting properties are grouped together to reduce the size of style sheets; these styles are called descendent selectors.
Answer the following statement true (T) or false (F)
What is nmap?
What will be an ideal response?
?In a data flow diagram (DFD), a gray hole is a process that has _____.
A. ?no input B. ?at least one output and one input, but the output obviously is insufficient to generate the input shown C. ?no output D. ?at least one input and one output, but the input obviously is insufficient to generate the output shown