Which of the following is a double-ended queue?
A) two-headed stack
B) two-tailed vector
C) circular array
D) deque
E) None of these

Question

Quizplus · Accepted Answer

A deque, short for double-ended queue, is a data structure that allows adding and removing elements from both ends, making it a double-ended queue. The other options, a two-headed stack and a two-tailed vector, do not exist as standard data structures, and a circular array can be used as a queue but is not specifically designed as a double-ended queue.

Which of the Following Is a Double-Ended Queue