True or False? a. A queue is a “first in, first out” structure. b. The element t

Question

True or False?

a. A queue is a “first in, first out” structure.

b. The element that has been in a queue the longest is at the “rear” of the queue.

c. If you enqueue five elements into an empty queue and then dequeue five elements, the queue will be empty again.

d. If you enqueue five elements into an empty queue and then perform the isEmpty operation five times, the queue will be empty again.

e. The enqueue operation should be classified as a “transformer.”

f. The isEmpty operation should be classified as a “transformer.”

g. The dequeue operation should be classified as an “observer.”

h. If we first enqueue elementA into an empty queue and then enqueue elementB, the front of the queue is elementA.

Explanation / Answer

a. A queue is a “first in, first out” structure.
Ans. True
b. The element that has been in a queue the longest is at the “rear” of the queue.
Ans. True
c. If you enqueue five elements into an empty queue and then dequeue five elements, the queue will be empty again.
Ans. True
d. If you enqueue five elements into an empty queue and then perform the isEmpty operation five times, the queue will be empty again.
Ans. True
e. The enqueue operation should be classified as a “transformer.”
Ans. True
f. The isEmpty operation should be classified as a “transformer.”
Ans. True
g. The dequeue operation should be classified as an “observer.”
Ans. True
h. If we first enqueue elementA into an empty queue and then enqueue elementB, the front of the queue is elementA.
Ans. True

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